20157665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{21559}}^1$

素因数の和:21592

約数の個数: 16

約数和(自身を含む): 27941760

約数和(自身を除く): 7784095

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 21559, 107795, 237149, 366503, 1185745, 1832515, 4031533, 20157665]

約数ペア:

[(1, 20157665), (5, 4031533), (11, 1832515), (17, 1185745), (55, 366503), (85, 237149), (187, 107795), (935, 21559)]