851625160

素因数分解:

$2^3\times 5^1\times {\mathrm{21290629}}^1$

素因数の和:21290640

約数の個数: 16

約数和(自身を含む): 1916156700

約数和(自身を除く): 1064531540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 21290629, 42581258, 85162516, 106453145, 170325032, 212906290, 425812580, 851625160]

約数ペア:

[(1, 851625160), (2, 425812580), (4, 212906290), (5, 170325032), (8, 106453145), (10, 85162516), (20, 42581258), (40, 21290629)]