72810980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2381}}^1$

素因数の和:2540

約数の個数: 48

約数和(自身を含む): 168073920

約数和(自身を除く): 95262940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 556, 695, 1390, 1529, 2381, 2780, 3058, 4762, 6116, 7645, 9524, 11905, 15290, 23810, 26191, 30580, 47620, 52382, 104764, 130955, 261910, 330959, 523820, 661918, 1323836, 1654795, 3309590, 3640549, 6619180, 7281098, 14562196, 18202745, 36405490, 72810980]

約数ペア:

[(1, 72810980), (2, 36405490), (4, 18202745), (5, 14562196), (10, 7281098), (11, 6619180), (20, 3640549), (22, 3309590), (44, 1654795), (55, 1323836), (110, 661918), (139, 523820), (220, 330959), (278, 261910), (556, 130955), (695, 104764), (1390, 52382), (1529, 47620), (2381, 30580), (2780, 26191), (3058, 23810), (4762, 15290), (6116, 11905), (7645, 9524)]