20685005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{22123}}^1$

素因数の和:22156

約数の個数: 16

約数和(自身を含む): 28672704

約数和(自身を除く): 7987699

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 22123, 110615, 243353, 376091, 1216765, 1880455, 4137001, 20685005]

約数ペア:

[(1, 20685005), (5, 4137001), (11, 1880455), (17, 1216765), (55, 376091), (85, 243353), (187, 110615), (935, 22123)]