12381431560

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1709}}^1\times {\mathrm{2551}}^1$

素因数の和:4342

約数の個数: 64

約数和(自身を含む): 28278201600

約数和(自身を除く): 15896770040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 1709, 2551, 2840, 3418, 5102, 6836, 8545, 10204, 12755, 13672, 17090, 20408, 25510, 34180, 51020, 68360, 102040, 121339, 181121, 242678, 362242, 485356, 606695, 724484, 905605, 970712, 1213390, 1448968, 1811210, 2426780, 3622420, 4359659, 4853560, 7244840, 8719318, 17438636, 21798295, 34877272, 43596590, 87193180, 174386360, 309535789, 619071578, 1238143156, 1547678945, 2476286312, 3095357890, 6190715780, 12381431560]

約数ペア:

[(1, 12381431560), (2, 6190715780), (4, 3095357890), (5, 2476286312), (8, 1547678945), (10, 1238143156), (20, 619071578), (40, 309535789), (71, 174386360), (142, 87193180), (284, 43596590), (355, 34877272), (568, 21798295), (710, 17438636), (1420, 8719318), (1709, 7244840), (2551, 4853560), (2840, 4359659), (3418, 3622420), (5102, 2426780), (6836, 1811210), (8545, 1448968), (10204, 1213390), (12755, 970712), (13672, 905605), (17090, 724484), (20408, 606695), (25510, 485356), (34180, 362242), (51020, 242678), (68360, 181121), (102040, 121339)]