72421960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139273}}^1$

素因数の和:139297

約数の個数: 32

約数和(自身を含む): 175485240

約数和(自身を除く): 103063280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 139273, 278546, 557092, 696365, 1114184, 1392730, 1810549, 2785460, 3621098, 5570920, 7242196, 9052745, 14484392, 18105490, 36210980, 72421960]

約数ペア:

[(1, 72421960), (2, 36210980), (4, 18105490), (5, 14484392), (8, 9052745), (10, 7242196), (13, 5570920), (20, 3621098), (26, 2785460), (40, 1810549), (52, 1392730), (65, 1114184), (104, 696365), (130, 557092), (260, 278546), (520, 139273)]