21088040980

素因数分解:

$2^2\times 5^1\times {\mathrm{1054402049}}^1$

素因数の和:1054402058

約数の個数: 12

約数和(自身を含む): 44284886100

約数和(自身を除く): 23196845120

約数列:

[1, 2, 4, 5, 10, 20, 1054402049, 2108804098, 4217608196, 5272010245, 10544020490, 21088040980]

約数ペア:

[(1, 21088040980), (2, 10544020490), (4, 5272010245), (5, 4217608196), (10, 2108804098), (20, 1054402049)]