21568778

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{140057}}^1$

素因数の和:140077

約数の個数: 16

約数和(自身を含む): 40336704

約数和(自身を除く): 18767926

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 140057, 280114, 980399, 1540627, 1960798, 3081254, 10784389, 21568778]

約数ペア:

[(1, 21568778), (2, 10784389), (7, 3081254), (11, 1960798), (14, 1540627), (22, 980399), (77, 280114), (154, 140057)]