20981015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{433}}^1\times {\mathrm{881}}^1$

素因数の和:1330

約数の個数: 16

約数和(自身を含む): 27560736

約数和(自身を除く): 6579721

約数列:

[1, 5, 11, 55, 433, 881, 2165, 4405, 4763, 9691, 23815, 48455, 381473, 1907365, 4196203, 20981015]

約数ペア:

[(1, 20981015), (5, 4196203), (11, 1907365), (55, 381473), (433, 48455), (881, 23815), (2165, 9691), (4405, 4763)]