20405710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{156967}}^1$

素因数の和:156987

約数の個数: 16

約数和(自身を含む): 39555936

約数和(自身を除く): 19150226

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 156967, 313934, 784835, 1569670, 2040571, 4081142, 10202855, 20405710]

約数ペア:

[(1, 20405710), (2, 10202855), (5, 4081142), (10, 2040571), (13, 1569670), (26, 784835), (65, 313934), (130, 156967)]