21889604

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{497491}}^1$

素因数の和:497506

約数の個数: 12

約数和(自身を含む): 41789328

約数和(自身を除く): 19899724

約数列:

[1, 2, 4, 11, 22, 44, 497491, 994982, 1989964, 5472401, 10944802, 21889604]

約数ペア:

[(1, 21889604), (2, 10944802), (4, 5472401), (11, 1989964), (22, 994982), (44, 497491)]