20217580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32609}}^1$

素因数の和:32649

約数の個数: 24

約数和(自身を含む): 43827840

約数和(自身を除く): 23610260

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32609, 65218, 130436, 163045, 326090, 652180, 1010879, 2021758, 4043516, 5054395, 10108790, 20217580]

約数ペア:

[(1, 20217580), (2, 10108790), (4, 5054395), (5, 4043516), (10, 2021758), (20, 1010879), (31, 652180), (62, 326090), (124, 163045), (155, 130436), (310, 65218), (620, 32609)]