15865403920

素因数分解:

$2^4\times 5^1\times {\mathrm{198317549}}^1$

素因数の和:198317562

約数の個数: 20

約数和(自身を含む): 36887064300

約数和(自身を除く): 21021660380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198317549, 396635098, 793270196, 991587745, 1586540392, 1983175490, 3173080784, 3966350980, 7932701960, 15865403920]

約数ペア:

[(1, 15865403920), (2, 7932701960), (4, 3966350980), (5, 3173080784), (8, 1983175490), (10, 1586540392), (16, 991587745), (20, 793270196), (40, 396635098), (80, 198317549)]