64871020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79111}}^1$

素因数の和:79161

約数の個数: 24

約数和(自身を含む): 139553568

約数和(自身を除く): 74682548

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 79111, 158222, 316444, 395555, 791110, 1582220, 3243551, 6487102, 12974204, 16217755, 32435510, 64871020]

約数ペア:

[(1, 64871020), (2, 32435510), (4, 16217755), (5, 12974204), (10, 6487102), (20, 3243551), (41, 1582220), (82, 791110), (164, 395555), (205, 316444), (410, 158222), (820, 79111)]