21878735

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{593}}^1$

素因数の和:802

約数の個数: 16

約数和(自身を含む): 27029376

約数和(自身を除く): 5150641

約数列:

[1, 5, 47, 157, 235, 593, 785, 2965, 7379, 27871, 36895, 93101, 139355, 465505, 4375747, 21878735]

約数ペア:

[(1, 21878735), (5, 4375747), (47, 465505), (157, 139355), (235, 93101), (593, 36895), (785, 27871), (2965, 7379)]