21117140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{95987}}^1$

素因数の和:96007

約数の個数: 24

約数和(自身を含む): 48377952

約数和(自身を除く): 27260812

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 95987, 191974, 383948, 479935, 959870, 1055857, 1919740, 2111714, 4223428, 5279285, 10558570, 21117140]

約数ペア:

[(1, 21117140), (2, 10558570), (4, 5279285), (5, 4223428), (10, 2111714), (11, 1919740), (20, 1055857), (22, 959870), (44, 479935), (55, 383948), (110, 191974), (220, 95987)]