21344360

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4987}}^1$

素因数の和:5105

約数の個数: 32

約数和(自身を含む): 48483360

約数和(自身を除く): 27139000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4987, 9974, 19948, 24935, 39896, 49870, 99740, 199480, 533609, 1067218, 2134436, 2668045, 4268872, 5336090, 10672180, 21344360]

約数ペア:

[(1, 21344360), (2, 10672180), (4, 5336090), (5, 4268872), (8, 2668045), (10, 2134436), (20, 1067218), (40, 533609), (107, 199480), (214, 99740), (428, 49870), (535, 39896), (856, 24935), (1070, 19948), (2140, 9974), (4280, 4987)]