21753220

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{11213}}^1$

素因数の和:11319

約数の個数: 24

約数和(自身を含む): 46156824

約数和(自身を除く): 24403604

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 11213, 22426, 44852, 56065, 112130, 224260, 1087661, 2175322, 4350644, 5438305, 10876610, 21753220]

約数ペア:

[(1, 21753220), (2, 10876610), (4, 5438305), (5, 4350644), (10, 2175322), (20, 1087661), (97, 224260), (194, 112130), (388, 56065), (485, 44852), (970, 22426), (1940, 11213)]