21373990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{194309}}^1$

素因数の和:194327

約数の個数: 16

約数和(自身を含む): 41970960

約数和(自身を除く): 20596970

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 194309, 388618, 971545, 1943090, 2137399, 4274798, 10686995, 21373990]

約数ペア:

[(1, 21373990), (2, 10686995), (5, 4274798), (10, 2137399), (11, 1943090), (22, 971545), (55, 388618), (110, 194309)]