81984420

素因数分解:

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

素因数の和:112

約数の個数: 288

約数和(自身を含む): 312157440

約数和(自身を除く): 230173020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 27, 28, 30, 35, 36, 41, 42, 45, 46, 54, 60, 63, 69, 70, 82, 84, 90, 92, 105, 108, 115, 123, 126, 135, 138, 140, 161, 164, 180, 189, 205, 207, 210, 230, 246, 252, 270, 276, 287, 315, 322, 345, 369, 378, 410, 414, 420, 460, 483, 492, 529, 540, 574, 615, 621, 630, 644, 690, 738, 756, 805, 820, 828, 861, 943, 945, 966, 1035, 1058, 1107, 1148, 1230, 1242, 1260, 1380, 1435, 1449, 1476, 1587, 1610, 1722, 1845, 1886, 1890, 1932, 2070, 2116, 2214, 2415, 2460, 2484, 2583, 2645, 2829, 2870, 2898, 3105, 3174, 3220, 3444, 3690, 3703, 3772, 3780, 4140, 4305, 4347, 4428, 4715, 4761, 4830, 5166, 5290, 5535, 5658, 5740, 5796, 6210, 6348, 6601, 7245, 7380, 7406, 7749, 7935, 8487, 8610, 8694, 9430, 9522, 9660, 10332, 10580, 11070, 11109, 11316, 12420, 12915, 13202, 14145, 14283, 14490, 14812, 15498, 15870, 16974, 17220, 17388, 18515, 18860, 19044, 19803, 21689, 21735, 22140, 22218, 23805, 25461, 25830, 26404, 28290, 28566, 28980, 30996, 31740, 33005, 33327, 33948, 37030, 38745, 39606, 42435, 43378, 43470, 44436, 47610, 50922, 51660, 55545, 56580, 57132, 59409, 65067, 66010, 66654, 71415, 74060, 77490, 79212, 84870, 86756, 86940, 95220, 99015, 99981, 101844, 108445, 111090, 118818, 127305, 130134, 132020, 133308, 142830, 151823, 154980, 166635, 169740, 178227, 195201, 198030, 199962, 216890, 222180, 237636, 254610, 260268, 285660, 297045, 303646, 325335, 333270, 356454, 390402, 396060, 399924, 433780, 455469, 499905, 509220, 585603, 594090, 607292, 650670, 666540, 712908, 759115, 780804, 891135, 910938, 976005, 999810, 1171206, 1188180, 1301340, 1366407, 1518230, 1782270, 1821876, 1952010, 1999620, 2277345, 2342412, 2732814, 2928015, 3036460, 3564540, 3904020, 4099221, 4554690, 5465628, 5856030, 6832035, 8198442, 9109380, 11712060, 13664070, 16396884, 20496105, 27328140, 40992210, 81984420]

約数ペア:

[(1, 81984420), (2, 40992210), (3, 27328140), (4, 20496105), (5, 16396884), (6, 13664070), (7, 11712060), (9, 9109380), (10, 8198442), (12, 6832035), (14, 5856030), (15, 5465628), (18, 4554690), (20, 4099221), (21, 3904020), (23, 3564540), (27, 3036460), (28, 2928015), (30, 2732814), (35, 2342412), (36, 2277345), (41, 1999620), (42, 1952010), (45, 1821876), (46, 1782270), (54, 1518230), (60, 1366407), (63, 1301340), (69, 1188180), (70, 1171206), (82, 999810), (84, 976005), (90, 910938), (92, 891135), (105, 780804), (108, 759115), (115, 712908), (123, 666540), (126, 650670), (135, 607292), (138, 594090), (140, 585603), (161, 509220), (164, 499905), (180, 455469), (189, 433780), (205, 399924), (207, 396060), (210, 390402), (230, 356454), (246, 333270), (252, 325335), (270, 303646), (276, 297045), (287, 285660), (315, 260268), (322, 254610), (345, 237636), (369, 222180), (378, 216890), (410, 199962), (414, 198030), (420, 195201), (460, 178227), (483, 169740), (492, 166635), (529, 154980), (540, 151823), (574, 142830), (615, 133308), (621, 132020), (630, 130134), (644, 127305), (690, 118818), (738, 111090), (756, 108445), (805, 101844), (820, 99981), (828, 99015), (861, 95220), (943, 86940), (945, 86756), (966, 84870), (1035, 79212), (1058, 77490), (1107, 74060), (1148, 71415), (1230, 66654), (1242, 66010), (1260, 65067), (1380, 59409), (1435, 57132), (1449, 56580), (1476, 55545), (1587, 51660), (1610, 50922), (1722, 47610), (1845, 44436), (1886, 43470), (1890, 43378), (1932, 42435), (2070, 39606), (2116, 38745), (2214, 37030), (2415, 33948), (2460, 33327), (2484, 33005), (2583, 31740), (2645, 30996), (2829, 28980), (2870, 28566), (2898, 28290), (3105, 26404), (3174, 25830), (3220, 25461), (3444, 23805), (3690, 22218), (3703, 22140), (3772, 21735), (3780, 21689), (4140, 19803), (4305, 19044), (4347, 18860), (4428, 18515), (4715, 17388), (4761, 17220), (4830, 16974), (5166, 15870), (5290, 15498), (5535, 14812), (5658, 14490), (5740, 14283), (5796, 14145), (6210, 13202), (6348, 12915), (6601, 12420), (7245, 11316), (7380, 11109), (7406, 11070), (7749, 10580), (7935, 10332), (8487, 9660), (8610, 9522), (8694, 9430)]