21321100

素因数分解:

$2^2\times 5^2\times {\mathrm{101}}^1\times {\mathrm{2111}}^1$

素因数の和:2226

約数の個数: 36

約数和(自身を含む): 46747008

約数和(自身を除く): 25425908

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 101, 202, 404, 505, 1010, 2020, 2111, 2525, 4222, 5050, 8444, 10100, 10555, 21110, 42220, 52775, 105550, 211100, 213211, 426422, 852844, 1066055, 2132110, 4264220, 5330275, 10660550, 21321100]

約数ペア:

[(1, 21321100), (2, 10660550), (4, 5330275), (5, 4264220), (10, 2132110), (20, 1066055), (25, 852844), (50, 426422), (100, 213211), (101, 211100), (202, 105550), (404, 52775), (505, 42220), (1010, 21110), (2020, 10555), (2111, 10100), (2525, 8444), (4222, 5050)]