221400820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{270001}}^1$

素因数の和:270051

約数の個数: 24

約数和(自身を含む): 476283528

約数和(自身を除く): 254882708

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 270001, 540002, 1080004, 1350005, 2700010, 5400020, 11070041, 22140082, 44280164, 55350205, 110700410, 221400820]

約数ペア:

[(1, 221400820), (2, 110700410), (4, 55350205), (5, 44280164), (10, 22140082), (20, 11070041), (41, 5400020), (82, 2700010), (164, 1350005), (205, 1080004), (410, 540002), (820, 270001)]