681501020

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{248723}}^1$

素因数の和:248869

約数の個数: 24

約数和(自身を含む): 1441604304

約数和(自身を除く): 760103284

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 248723, 497446, 994892, 1243615, 2487230, 4974460, 34075051, 68150102, 136300204, 170375255, 340750510, 681501020]

約数ペア:

[(1, 681501020), (2, 340750510), (4, 170375255), (5, 136300204), (10, 68150102), (20, 34075051), (137, 4974460), (274, 2487230), (548, 1243615), (685, 994892), (1370, 497446), (2740, 248723)]