639804520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{940889}}^1$

素因数の和:940917

約数の個数: 32

約数和(自身を含む): 1524241800

約数和(自身を除く): 884437280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 940889, 1881778, 3763556, 4704445, 7527112, 9408890, 15995113, 18817780, 31990226, 37635560, 63980452, 79975565, 127960904, 159951130, 319902260, 639804520]

約数ペア:

[(1, 639804520), (2, 319902260), (4, 159951130), (5, 127960904), (8, 79975565), (10, 63980452), (17, 37635560), (20, 31990226), (34, 18817780), (40, 15995113), (68, 9408890), (85, 7527112), (136, 4704445), (170, 3763556), (340, 1881778), (680, 940889)]