30768920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:217

約数の個数: 128

約数和(自身を含む): 87091200

約数和(自身を除く): 56322280

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 79, 91, 104, 107, 130, 140, 158, 182, 214, 260, 280, 316, 364, 395, 428, 455, 520, 535, 553, 632, 728, 749, 790, 856, 910, 1027, 1070, 1106, 1391, 1498, 1580, 1820, 2054, 2140, 2212, 2765, 2782, 2996, 3160, 3640, 3745, 4108, 4280, 4424, 5135, 5530, 5564, 5992, 6955, 7189, 7490, 8216, 8453, 9737, 10270, 11060, 11128, 13910, 14378, 14980, 16906, 19474, 20540, 22120, 27820, 28756, 29960, 33812, 35945, 38948, 41080, 42265, 48685, 55640, 57512, 59171, 67624, 71890, 77896, 84530, 97370, 109889, 118342, 143780, 169060, 194740, 219778, 236684, 287560, 295855, 338120, 389480, 439556, 473368, 549445, 591710, 769223, 879112, 1098890, 1183420, 1538446, 2197780, 2366840, 3076892, 3846115, 4395560, 6153784, 7692230, 15384460, 30768920]

約数ペア:

[(1, 30768920), (2, 15384460), (4, 7692230), (5, 6153784), (7, 4395560), (8, 3846115), (10, 3076892), (13, 2366840), (14, 2197780), (20, 1538446), (26, 1183420), (28, 1098890), (35, 879112), (40, 769223), (52, 591710), (56, 549445), (65, 473368), (70, 439556), (79, 389480), (91, 338120), (104, 295855), (107, 287560), (130, 236684), (140, 219778), (158, 194740), (182, 169060), (214, 143780), (260, 118342), (280, 109889), (316, 97370), (364, 84530), (395, 77896), (428, 71890), (455, 67624), (520, 59171), (535, 57512), (553, 55640), (632, 48685), (728, 42265), (749, 41080), (790, 38948), (856, 35945), (910, 33812), (1027, 29960), (1070, 28756), (1106, 27820), (1391, 22120), (1498, 20540), (1580, 19474), (1820, 16906), (2054, 14980), (2140, 14378), (2212, 13910), (2765, 11128), (2782, 11060), (2996, 10270), (3160, 9737), (3640, 8453), (3745, 8216), (4108, 7490), (4280, 7189), (4424, 6955), (5135, 5992), (5530, 5564)]