80725220

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{263}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 172972800

約数和(自身を除く): 92247580

約数列:

[1, 2, 4, 5, 10, 20, 103, 149, 206, 263, 298, 412, 515, 526, 596, 745, 1030, 1052, 1315, 1490, 2060, 2630, 2980, 5260, 15347, 27089, 30694, 39187, 54178, 61388, 76735, 78374, 108356, 135445, 153470, 156748, 195935, 270890, 306940, 391870, 541780, 783740, 4036261, 8072522, 16145044, 20181305, 40362610, 80725220]

約数ペア:

[(1, 80725220), (2, 40362610), (4, 20181305), (5, 16145044), (10, 8072522), (20, 4036261), (103, 783740), (149, 541780), (206, 391870), (263, 306940), (298, 270890), (412, 195935), (515, 156748), (526, 153470), (596, 135445), (745, 108356), (1030, 78374), (1052, 76735), (1315, 61388), (1490, 54178), (2060, 39187), (2630, 30694), (2980, 27089), (5260, 15347)]