21818390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198349}}^1$

素因数の和:198367

約数の個数: 16

約数和(自身を含む): 42843600

約数和(自身を除く): 21025210

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198349, 396698, 991745, 1983490, 2181839, 4363678, 10909195, 21818390]

約数ペア:

[(1, 21818390), (2, 10909195), (5, 4363678), (10, 2181839), (11, 1983490), (22, 991745), (55, 396698), (110, 198349)]