20005520

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2213}}^1$

素因数の和:2339

約数の個数: 40

約数和(自身を含む): 46945656

約数和(自身を除く): 26940136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2213, 2260, 4426, 4520, 8852, 9040, 11065, 17704, 22130, 35408, 44260, 88520, 177040, 250069, 500138, 1000276, 1250345, 2000552, 2500690, 4001104, 5001380, 10002760, 20005520]

約数ペア:

[(1, 20005520), (2, 10002760), (4, 5001380), (5, 4001104), (8, 2500690), (10, 2000552), (16, 1250345), (20, 1000276), (40, 500138), (80, 250069), (113, 177040), (226, 88520), (452, 44260), (565, 35408), (904, 22130), (1130, 17704), (1808, 11065), (2213, 9040), (2260, 8852), (4426, 4520)]