19764580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89839}}^1$

素因数の和:89859

約数の個数: 24

約数和(自身を含む): 45279360

約数和(自身を除く): 25514780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 89839, 179678, 359356, 449195, 898390, 988229, 1796780, 1976458, 3952916, 4941145, 9882290, 19764580]

約数ペア:

[(1, 19764580), (2, 9882290), (4, 4941145), (5, 3952916), (10, 1976458), (11, 1796780), (20, 988229), (22, 898390), (44, 449195), (55, 359356), (110, 179678), (220, 89839)]