21082900620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{521}}^1\times {\mathrm{2687}}^1$

素因数の和:3471

約数の個数: 96

約数和(自身を含む): 59403165696

約数和(自身を除く): 38320265076

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 251, 502, 521, 753, 1004, 1042, 1255, 1506, 1563, 2084, 2510, 2605, 2687, 3012, 3126, 3765, 5020, 5210, 5374, 6252, 7530, 7815, 8061, 10420, 10748, 13435, 15060, 15630, 16122, 26870, 31260, 32244, 40305, 53740, 80610, 130771, 161220, 261542, 392313, 523084, 653855, 674437, 784626, 1307710, 1348874, 1399927, 1569252, 1961565, 2023311, 2615420, 2697748, 2799854, 3372185, 3923130, 4046622, 4199781, 5599708, 6744370, 6999635, 7846260, 8093244, 8399562, 10116555, 13488740, 13999270, 16799124, 20233110, 20998905, 27998540, 40466220, 41997810, 83995620, 351381677, 702763354, 1054145031, 1405526708, 1756908385, 2108290062, 3513816770, 4216580124, 5270725155, 7027633540, 10541450310, 21082900620]

約数ペア:

[(1, 21082900620), (2, 10541450310), (3, 7027633540), (4, 5270725155), (5, 4216580124), (6, 3513816770), (10, 2108290062), (12, 1756908385), (15, 1405526708), (20, 1054145031), (30, 702763354), (60, 351381677), (251, 83995620), (502, 41997810), (521, 40466220), (753, 27998540), (1004, 20998905), (1042, 20233110), (1255, 16799124), (1506, 13999270), (1563, 13488740), (2084, 10116555), (2510, 8399562), (2605, 8093244), (2687, 7846260), (3012, 6999635), (3126, 6744370), (3765, 5599708), (5020, 4199781), (5210, 4046622), (5374, 3923130), (6252, 3372185), (7530, 2799854), (7815, 2697748), (8061, 2615420), (10420, 2023311), (10748, 1961565), (13435, 1569252), (15060, 1399927), (15630, 1348874), (16122, 1307710), (26870, 784626), (31260, 674437), (32244, 653855), (40305, 523084), (53740, 392313), (80610, 261542), (130771, 161220)]