215910520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{771109}}^1$

素因数の和:771127

約数の個数: 32

約数和(自身を含む): 555199200

約数和(自身を除く): 339288680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 771109, 1542218, 3084436, 3855545, 5397763, 6168872, 7711090, 10795526, 15422180, 21591052, 26988815, 30844360, 43182104, 53977630, 107955260, 215910520]

約数ペア:

[(1, 215910520), (2, 107955260), (4, 53977630), (5, 43182104), (7, 30844360), (8, 26988815), (10, 21591052), (14, 15422180), (20, 10795526), (28, 7711090), (35, 6168872), (40, 5397763), (56, 3855545), (70, 3084436), (140, 1542218), (280, 771109)]