81862420

素因数分解:

$2^2\times 5^1\times {\mathrm{383}}^1\times {\mathrm{10687}}^1$

素因数の和:11079

約数の個数: 24

約数和(自身を含む): 172376064

約数和(自身を除く): 90513644

約数列:

[1, 2, 4, 5, 10, 20, 383, 766, 1532, 1915, 3830, 7660, 10687, 21374, 42748, 53435, 106870, 213740, 4093121, 8186242, 16372484, 20465605, 40931210, 81862420]

約数ペア:

[(1, 81862420), (2, 40931210), (4, 20465605), (5, 16372484), (10, 8186242), (20, 4093121), (383, 213740), (766, 106870), (1532, 53435), (1915, 42748), (3830, 21374), (7660, 10687)]