639350453810

素因数分解:

$2^1\times 5^1\times {\mathrm{21001}}^1\times {\mathrm{3044381}}^1$

素因数の和:3065389

約数の個数: 16

約数和(自身を含む): 1150885993752

約数和(自身を除く): 511535539942

約数列:

[1, 2, 5, 10, 21001, 42002, 105005, 210010, 3044381, 6088762, 15221905, 30443810, 63935045381, 127870090762, 319675226905, 639350453810]

約数ペア:

[(1, 639350453810), (2, 319675226905), (5, 127870090762), (10, 63935045381), (21001, 30443810), (42002, 15221905), (105005, 6088762), (210010, 3044381)]