639779870

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{12101}}^1$

素因数の和:12436

約数の個数: 32

約数和(自身を含む): 1223366976

約数和(自身を除く): 583587106

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 311, 622, 1555, 3110, 5287, 10574, 12101, 24202, 26435, 52870, 60505, 121010, 205717, 411434, 1028585, 2057170, 3763411, 7526822, 18817055, 37634110, 63977987, 127955974, 319889935, 639779870]

約数ペア:

[(1, 639779870), (2, 319889935), (5, 127955974), (10, 63977987), (17, 37634110), (34, 18817055), (85, 7526822), (170, 3763411), (311, 2057170), (622, 1028585), (1555, 411434), (3110, 205717), (5287, 121010), (10574, 60505), (12101, 52870), (24202, 26435)]