20477620

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{2221}}^1$

素因数の和:2691

約数の個数: 24

約数和(自身を含む): 43115688

約数和(自身を除く): 22638068

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 2221, 2305, 4442, 4610, 8884, 9220, 11105, 22210, 44420, 1023881, 2047762, 4095524, 5119405, 10238810, 20477620]

約数ペア:

[(1, 20477620), (2, 10238810), (4, 5119405), (5, 4095524), (10, 2047762), (20, 1023881), (461, 44420), (922, 22210), (1844, 11105), (2221, 9220), (2305, 8884), (4442, 4610)]