21674520

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:135

約数の個数: 256

約数和(自身を含む): 85708800

約数和(自身を除く): 64034280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 47, 54, 56, 60, 61, 63, 70, 72, 84, 90, 94, 105, 108, 120, 122, 126, 135, 140, 141, 168, 180, 183, 188, 189, 210, 216, 235, 244, 252, 270, 280, 282, 305, 315, 329, 360, 366, 376, 378, 420, 423, 427, 470, 488, 504, 540, 549, 564, 610, 630, 658, 705, 732, 756, 840, 846, 854, 915, 940, 945, 987, 1080, 1098, 1128, 1220, 1260, 1269, 1281, 1316, 1410, 1464, 1512, 1645, 1647, 1692, 1708, 1830, 1880, 1890, 1974, 2115, 2135, 2196, 2440, 2520, 2538, 2562, 2632, 2745, 2820, 2867, 2961, 3290, 3294, 3384, 3416, 3660, 3780, 3843, 3948, 4230, 4270, 4392, 4935, 5076, 5124, 5490, 5640, 5734, 5922, 6345, 6405, 6580, 6588, 7320, 7560, 7686, 7896, 8235, 8460, 8540, 8601, 8883, 9870, 10152, 10248, 10980, 11468, 11529, 11844, 12690, 12810, 13160, 13176, 14335, 14805, 15372, 16470, 16920, 17080, 17202, 17766, 19215, 19740, 20069, 21960, 22936, 23058, 23688, 25380, 25620, 25803, 28670, 29610, 30744, 32940, 34404, 35532, 38430, 39480, 40138, 43005, 44415, 46116, 50760, 51240, 51606, 57340, 57645, 59220, 60207, 65880, 68808, 71064, 76860, 77409, 80276, 86010, 88830, 92232, 100345, 103212, 114680, 115290, 118440, 120414, 129015, 153720, 154818, 160552, 172020, 177660, 180621, 200690, 206424, 230580, 240828, 258030, 301035, 309636, 344040, 355320, 361242, 387045, 401380, 461160, 481656, 516060, 541863, 602070, 619272, 722484, 774090, 802760, 903105, 1032120, 1083726, 1204140, 1444968, 1548180, 1806210, 2167452, 2408280, 2709315, 3096360, 3612420, 4334904, 5418630, 7224840, 10837260, 21674520]

約数ペア:

[(1, 21674520), (2, 10837260), (3, 7224840), (4, 5418630), (5, 4334904), (6, 3612420), (7, 3096360), (8, 2709315), (9, 2408280), (10, 2167452), (12, 1806210), (14, 1548180), (15, 1444968), (18, 1204140), (20, 1083726), (21, 1032120), (24, 903105), (27, 802760), (28, 774090), (30, 722484), (35, 619272), (36, 602070), (40, 541863), (42, 516060), (45, 481656), (47, 461160), (54, 401380), (56, 387045), (60, 361242), (61, 355320), (63, 344040), (70, 309636), (72, 301035), (84, 258030), (90, 240828), (94, 230580), (105, 206424), (108, 200690), (120, 180621), (122, 177660), (126, 172020), (135, 160552), (140, 154818), (141, 153720), (168, 129015), (180, 120414), (183, 118440), (188, 115290), (189, 114680), (210, 103212), (216, 100345), (235, 92232), (244, 88830), (252, 86010), (270, 80276), (280, 77409), (282, 76860), (305, 71064), (315, 68808), (329, 65880), (360, 60207), (366, 59220), (376, 57645), (378, 57340), (420, 51606), (423, 51240), (427, 50760), (470, 46116), (488, 44415), (504, 43005), (540, 40138), (549, 39480), (564, 38430), (610, 35532), (630, 34404), (658, 32940), (705, 30744), (732, 29610), (756, 28670), (840, 25803), (846, 25620), (854, 25380), (915, 23688), (940, 23058), (945, 22936), (987, 21960), (1080, 20069), (1098, 19740), (1128, 19215), (1220, 17766), (1260, 17202), (1269, 17080), (1281, 16920), (1316, 16470), (1410, 15372), (1464, 14805), (1512, 14335), (1645, 13176), (1647, 13160), (1692, 12810), (1708, 12690), (1830, 11844), (1880, 11529), (1890, 11468), (1974, 10980), (2115, 10248), (2135, 10152), (2196, 9870), (2440, 8883), (2520, 8601), (2538, 8540), (2562, 8460), (2632, 8235), (2745, 7896), (2820, 7686), (2867, 7560), (2961, 7320), (3290, 6588), (3294, 6580), (3384, 6405), (3416, 6345), (3660, 5922), (3780, 5734), (3843, 5640), (3948, 5490), (4230, 5124), (4270, 5076), (4392, 4935)]