20627880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1889}}^1$

素因数の和:1923

約数の個数: 128

約数和(自身を含む): 76204800

約数和(自身を除く): 55576920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 1889, 2184, 2730, 3640, 3778, 5460, 5667, 7556, 9445, 10920, 11334, 13223, 15112, 18890, 22668, 24557, 26446, 28335, 37780, 39669, 45336, 49114, 52892, 56670, 66115, 73671, 75560, 79338, 98228, 105784, 113340, 122785, 132230, 147342, 158676, 171899, 196456, 198345, 226680, 245570, 264460, 294684, 317352, 343798, 368355, 396690, 491140, 515697, 528920, 589368, 687596, 736710, 793380, 859495, 982280, 1031394, 1375192, 1473420, 1586760, 1718990, 2062788, 2578485, 2946840, 3437980, 4125576, 5156970, 6875960, 10313940, 20627880]

約数ペア:

[(1, 20627880), (2, 10313940), (3, 6875960), (4, 5156970), (5, 4125576), (6, 3437980), (7, 2946840), (8, 2578485), (10, 2062788), (12, 1718990), (13, 1586760), (14, 1473420), (15, 1375192), (20, 1031394), (21, 982280), (24, 859495), (26, 793380), (28, 736710), (30, 687596), (35, 589368), (39, 528920), (40, 515697), (42, 491140), (52, 396690), (56, 368355), (60, 343798), (65, 317352), (70, 294684), (78, 264460), (84, 245570), (91, 226680), (104, 198345), (105, 196456), (120, 171899), (130, 158676), (140, 147342), (156, 132230), (168, 122785), (182, 113340), (195, 105784), (210, 98228), (260, 79338), (273, 75560), (280, 73671), (312, 66115), (364, 56670), (390, 52892), (420, 49114), (455, 45336), (520, 39669), (546, 37780), (728, 28335), (780, 26446), (840, 24557), (910, 22668), (1092, 18890), (1365, 15112), (1560, 13223), (1820, 11334), (1889, 10920), (2184, 9445), (2730, 7556), (3640, 5667), (3778, 5460)]