21315665

素因数分解:

$5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{4649}}^1$

素因数の和:4792

約数の個数: 16

約数和(自身を含む): 29462400

約数和(自身を除く): 8146735

約数列:

[1, 5, 7, 35, 131, 655, 917, 4585, 4649, 23245, 32543, 162715, 609019, 3045095, 4263133, 21315665]

約数ペア:

[(1, 21315665), (5, 4263133), (7, 3045095), (35, 609019), (131, 162715), (655, 32543), (917, 23245), (4585, 4649)]