20180836

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{617}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 41425776

約数和(自身を除く): 21244940

約数列:

[1, 2, 4, 13, 17, 26, 34, 37, 52, 68, 74, 148, 221, 442, 481, 617, 629, 884, 962, 1234, 1258, 1924, 2468, 2516, 8021, 8177, 10489, 16042, 16354, 20978, 22829, 32084, 32708, 41956, 45658, 91316, 136357, 272714, 296777, 388093, 545428, 593554, 776186, 1187108, 1552372, 5045209, 10090418, 20180836]

約数ペア:

[(1, 20180836), (2, 10090418), (4, 5045209), (13, 1552372), (17, 1187108), (26, 776186), (34, 593554), (37, 545428), (52, 388093), (68, 296777), (74, 272714), (148, 136357), (221, 91316), (442, 45658), (481, 41956), (617, 32708), (629, 32084), (884, 22829), (962, 20978), (1234, 16354), (1258, 16042), (1924, 10489), (2468, 8177), (2516, 8021)]