21387240

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:94

約数の個数: 320

約数和(自身を含む): 87816960

約数和(自身を除く): 66429720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 23, 24, 27, 28, 30, 35, 36, 40, 41, 42, 45, 46, 54, 56, 60, 63, 69, 70, 72, 81, 82, 84, 90, 92, 105, 108, 115, 120, 123, 126, 135, 138, 140, 161, 162, 164, 168, 180, 184, 189, 205, 207, 210, 216, 230, 246, 252, 270, 276, 280, 287, 315, 322, 324, 328, 345, 360, 369, 378, 405, 410, 414, 420, 460, 483, 492, 504, 540, 552, 567, 574, 615, 621, 630, 644, 648, 690, 738, 756, 805, 810, 820, 828, 840, 861, 920, 943, 945, 966, 984, 1035, 1080, 1107, 1134, 1148, 1230, 1242, 1260, 1288, 1380, 1435, 1449, 1476, 1512, 1610, 1620, 1640, 1656, 1722, 1845, 1863, 1886, 1890, 1932, 2070, 2214, 2268, 2296, 2415, 2460, 2484, 2520, 2583, 2760, 2829, 2835, 2870, 2898, 2952, 3105, 3220, 3240, 3321, 3444, 3690, 3726, 3772, 3780, 3864, 4140, 4305, 4347, 4428, 4536, 4715, 4830, 4920, 4968, 5166, 5535, 5658, 5670, 5740, 5796, 6210, 6440, 6601, 6642, 6888, 7245, 7380, 7452, 7544, 7560, 7749, 8280, 8487, 8610, 8694, 8856, 9315, 9430, 9660, 10332, 11070, 11316, 11340, 11480, 11592, 12420, 12915, 13041, 13202, 13284, 14145, 14490, 14760, 14904, 15498, 16605, 16974, 17220, 17388, 18630, 18860, 19320, 19803, 20664, 21735, 22140, 22632, 22680, 23247, 24840, 25461, 25830, 26082, 26404, 26568, 28290, 28980, 30996, 33005, 33210, 33948, 34440, 34776, 37260, 37720, 38745, 39606, 42435, 43470, 44280, 46494, 50922, 51660, 52164, 52808, 56580, 57960, 59409, 61992, 65205, 66010, 66420, 67896, 74520, 76383, 77490, 79212, 84870, 86940, 92988, 99015, 101844, 103320, 104328, 113160, 116235, 118818, 127305, 130410, 132020, 132840, 152766, 154980, 158424, 169740, 173880, 178227, 185976, 198030, 203688, 232470, 237636, 254610, 260820, 264040, 297045, 305532, 309960, 339480, 356454, 381915, 396060, 464940, 475272, 509220, 521640, 534681, 594090, 611064, 712908, 763830, 792120, 891135, 929880, 1018440, 1069362, 1188180, 1425816, 1527660, 1782270, 2138724, 2376360, 2673405, 3055320, 3564540, 4277448, 5346810, 7129080, 10693620, 21387240]

約数ペア:

[(1, 21387240), (2, 10693620), (3, 7129080), (4, 5346810), (5, 4277448), (6, 3564540), (7, 3055320), (8, 2673405), (9, 2376360), (10, 2138724), (12, 1782270), (14, 1527660), (15, 1425816), (18, 1188180), (20, 1069362), (21, 1018440), (23, 929880), (24, 891135), (27, 792120), (28, 763830), (30, 712908), (35, 611064), (36, 594090), (40, 534681), (41, 521640), (42, 509220), (45, 475272), (46, 464940), (54, 396060), (56, 381915), (60, 356454), (63, 339480), (69, 309960), (70, 305532), (72, 297045), (81, 264040), (82, 260820), (84, 254610), (90, 237636), (92, 232470), (105, 203688), (108, 198030), (115, 185976), (120, 178227), (123, 173880), (126, 169740), (135, 158424), (138, 154980), (140, 152766), (161, 132840), (162, 132020), (164, 130410), (168, 127305), (180, 118818), (184, 116235), (189, 113160), (205, 104328), (207, 103320), (210, 101844), (216, 99015), (230, 92988), (246, 86940), (252, 84870), (270, 79212), (276, 77490), (280, 76383), (287, 74520), (315, 67896), (322, 66420), (324, 66010), (328, 65205), (345, 61992), (360, 59409), (369, 57960), (378, 56580), (405, 52808), (410, 52164), (414, 51660), (420, 50922), (460, 46494), (483, 44280), (492, 43470), (504, 42435), (540, 39606), (552, 38745), (567, 37720), (574, 37260), (615, 34776), (621, 34440), (630, 33948), (644, 33210), (648, 33005), (690, 30996), (738, 28980), (756, 28290), (805, 26568), (810, 26404), (820, 26082), (828, 25830), (840, 25461), (861, 24840), (920, 23247), (943, 22680), (945, 22632), (966, 22140), (984, 21735), (1035, 20664), (1080, 19803), (1107, 19320), (1134, 18860), (1148, 18630), (1230, 17388), (1242, 17220), (1260, 16974), (1288, 16605), (1380, 15498), (1435, 14904), (1449, 14760), (1476, 14490), (1512, 14145), (1610, 13284), (1620, 13202), (1640, 13041), (1656, 12915), (1722, 12420), (1845, 11592), (1863, 11480), (1886, 11340), (1890, 11316), (1932, 11070), (2070, 10332), (2214, 9660), (2268, 9430), (2296, 9315), (2415, 8856), (2460, 8694), (2484, 8610), (2520, 8487), (2583, 8280), (2760, 7749), (2829, 7560), (2835, 7544), (2870, 7452), (2898, 7380), (2952, 7245), (3105, 6888), (3220, 6642), (3240, 6601), (3321, 6440), (3444, 6210), (3690, 5796), (3726, 5740), (3772, 5670), (3780, 5658), (3864, 5535), (4140, 5166), (4305, 4968), (4347, 4920), (4428, 4830), (4536, 4715)]