64818980

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{12323}}^1$

素因数の和:12595

約数の個数: 24

約数和(自身を含む): 136648512

約数和(自身を除く): 71829532

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 5260, 12323, 24646, 49292, 61615, 123230, 246460, 3240949, 6481898, 12963796, 16204745, 32409490, 64818980]

約数ペア:

[(1, 64818980), (2, 32409490), (4, 16204745), (5, 12963796), (10, 6481898), (20, 3240949), (263, 246460), (526, 123230), (1052, 61615), (1315, 49292), (2630, 24646), (5260, 12323)]