20980670

素因数分解:

$2^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{4027}}^1$

素因数の和:4555

約数の個数: 16

約数和(自身を含む): 37847088

約数和(自身を除く): 16866418

約数列:

[1, 2, 5, 10, 521, 1042, 2605, 4027, 5210, 8054, 20135, 40270, 2098067, 4196134, 10490335, 20980670]

約数ペア:

[(1, 20980670), (2, 10490335), (5, 4196134), (10, 2098067), (521, 40270), (1042, 20135), (2605, 8054), (4027, 5210)]