21493680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^2$

素因数の和:195

約数の個数: 120

約数和(自身を含む): 72630768

約数和(自身を除く): 51137088

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 83, 104, 120, 130, 156, 166, 195, 208, 240, 249, 260, 312, 332, 390, 415, 498, 520, 624, 664, 780, 830, 996, 1040, 1079, 1245, 1328, 1560, 1660, 1992, 2158, 2490, 3120, 3237, 3320, 3984, 4316, 4980, 5395, 6474, 6640, 6889, 8632, 9960, 10790, 12948, 13778, 16185, 17264, 19920, 20667, 21580, 25896, 27556, 32370, 34445, 41334, 43160, 51792, 55112, 64740, 68890, 82668, 86320, 89557, 103335, 110224, 129480, 137780, 165336, 179114, 206670, 258960, 268671, 275560, 330672, 358228, 413340, 447785, 537342, 551120, 716456, 826680, 895570, 1074684, 1343355, 1432912, 1653360, 1791140, 2149368, 2686710, 3582280, 4298736, 5373420, 7164560, 10746840, 21493680]

約数ペア:

[(1, 21493680), (2, 10746840), (3, 7164560), (4, 5373420), (5, 4298736), (6, 3582280), (8, 2686710), (10, 2149368), (12, 1791140), (13, 1653360), (15, 1432912), (16, 1343355), (20, 1074684), (24, 895570), (26, 826680), (30, 716456), (39, 551120), (40, 537342), (48, 447785), (52, 413340), (60, 358228), (65, 330672), (78, 275560), (80, 268671), (83, 258960), (104, 206670), (120, 179114), (130, 165336), (156, 137780), (166, 129480), (195, 110224), (208, 103335), (240, 89557), (249, 86320), (260, 82668), (312, 68890), (332, 64740), (390, 55112), (415, 51792), (498, 43160), (520, 41334), (624, 34445), (664, 32370), (780, 27556), (830, 25896), (996, 21580), (1040, 20667), (1079, 19920), (1245, 17264), (1328, 16185), (1560, 13778), (1660, 12948), (1992, 10790), (2158, 9960), (2490, 8632), (3120, 6889), (3237, 6640), (3320, 6474), (3984, 5395), (4316, 4980)]