21291685

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{2837}}^1$

素因数の和:2940

約数の個数: 16

約数和(自身を含む): 27244800

約数和(自身を除く): 5953115

約数列:

[1, 5, 19, 79, 95, 395, 1501, 2837, 7505, 14185, 53903, 224123, 269515, 1120615, 4258337, 21291685]

約数ペア:

[(1, 21291685), (5, 4258337), (19, 1120615), (79, 269515), (95, 224123), (395, 53903), (1501, 14185), (2837, 7505)]