20654821240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1901}}^1\times {\mathrm{6317}}^1$

素因数の和:8272

約数の個数: 64

約数和(自身を含む): 47586670560

約数和(自身を除く): 26931849320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 1901, 3802, 6317, 7604, 9505, 12634, 15208, 19010, 25268, 31585, 38020, 50536, 63170, 76040, 81743, 126340, 163486, 252680, 271631, 326972, 408715, 543262, 653944, 817430, 1086524, 1358155, 1634860, 2173048, 2716310, 3269720, 5432620, 10865240, 12008617, 24017234, 48034468, 60043085, 96068936, 120086170, 240172340, 480344680, 516370531, 1032741062, 2065482124, 2581852655, 4130964248, 5163705310, 10327410620, 20654821240]

約数ペア:

[(1, 20654821240), (2, 10327410620), (4, 5163705310), (5, 4130964248), (8, 2581852655), (10, 2065482124), (20, 1032741062), (40, 516370531), (43, 480344680), (86, 240172340), (172, 120086170), (215, 96068936), (344, 60043085), (430, 48034468), (860, 24017234), (1720, 12008617), (1901, 10865240), (3802, 5432620), (6317, 3269720), (7604, 2716310), (9505, 2173048), (12634, 1634860), (15208, 1358155), (19010, 1086524), (25268, 817430), (31585, 653944), (38020, 543262), (50536, 408715), (63170, 326972), (76040, 271631), (81743, 252680), (126340, 163486)]