78280780

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{7027}}^1$

素因数の和:7593

約数の個数: 24

約数和(自身を含む): 164708208

約数和(自身を除く): 86427428

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 2228, 2785, 5570, 7027, 11140, 14054, 28108, 35135, 70270, 140540, 3914039, 7828078, 15656156, 19570195, 39140390, 78280780]

約数ペア:

[(1, 78280780), (2, 39140390), (4, 19570195), (5, 15656156), (10, 7828078), (20, 3914039), (557, 140540), (1114, 70270), (2228, 35135), (2785, 28108), (5570, 14054), (7027, 11140)]