21705710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{166967}}^1$

素因数の和:166987

約数の個数: 16

約数和(自身を含む): 42075936

約数和(自身を除く): 20370226

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 166967, 333934, 834835, 1669670, 2170571, 4341142, 10852855, 21705710]

約数ペア:

[(1, 21705710), (2, 10852855), (5, 4341142), (10, 2170571), (13, 1669670), (26, 834835), (65, 333934), (130, 166967)]