20195890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{487}}^1$

素因数の和:547

約数の個数: 64

約数和(自身を含む): 44271360

約数和(自身を除く): 24075470

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 29, 55, 58, 65, 110, 130, 143, 145, 286, 290, 319, 377, 487, 638, 715, 754, 974, 1430, 1595, 1885, 2435, 3190, 3770, 4147, 4870, 5357, 6331, 8294, 10714, 12662, 14123, 20735, 26785, 28246, 31655, 41470, 53570, 63310, 69641, 70615, 139282, 141230, 155353, 183599, 310706, 348205, 367198, 696410, 776765, 917995, 1553530, 1835990, 2019589, 4039178, 10097945, 20195890]

約数ペア:

[(1, 20195890), (2, 10097945), (5, 4039178), (10, 2019589), (11, 1835990), (13, 1553530), (22, 917995), (26, 776765), (29, 696410), (55, 367198), (58, 348205), (65, 310706), (110, 183599), (130, 155353), (143, 141230), (145, 139282), (286, 70615), (290, 69641), (319, 63310), (377, 53570), (487, 41470), (638, 31655), (715, 28246), (754, 26785), (974, 20735), (1430, 14123), (1595, 12662), (1885, 10714), (2435, 8294), (3190, 6331), (3770, 5357), (4147, 4870)]