21622139

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 29168640

約数和(自身を除く): 7546501

約数列:

[1, 7, 11, 23, 29, 77, 161, 203, 253, 319, 421, 667, 1771, 2233, 2947, 4631, 4669, 7337, 9683, 12209, 32417, 51359, 67781, 85463, 106513, 134299, 280807, 745591, 940093, 1965649, 3088877, 21622139]

約数ペア:

[(1, 21622139), (7, 3088877), (11, 1965649), (23, 940093), (29, 745591), (77, 280807), (161, 134299), (203, 106513), (253, 85463), (319, 67781), (421, 51359), (667, 32417), (1771, 12209), (2233, 9683), (2947, 7337), (4631, 4669)]