21630364

素因数分解:

$2^2\times 7^2\times {\mathrm{110359}}^1$

素因数の和:110377

約数の個数: 18

約数和(自身を含む): 44033640

約数和(自身を除く): 22403276

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 110359, 220718, 441436, 772513, 1545026, 3090052, 5407591, 10815182, 21630364]

約数ペア:

[(1, 21630364), (2, 10815182), (4, 5407591), (7, 3090052), (14, 1545026), (28, 772513), (49, 441436), (98, 220718), (196, 110359)]