19787405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{21163}}^1$

素因数の和:21196

約数の個数: 16

約数和(自身を含む): 27428544

約数和(自身を除く): 7641139

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 21163, 105815, 232793, 359771, 1163965, 1798855, 3957481, 19787405]

約数ペア:

[(1, 19787405), (5, 3957481), (11, 1798855), (17, 1163965), (55, 359771), (85, 232793), (187, 105815), (935, 21163)]