172212940

素因数分解:

$2^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{17681}}^1$

素因数の和:18177

約数の個数: 24

約数和(自身を含む): 362410272

約数和(自身を除く): 190197332

約数列:

[1, 2, 4, 5, 10, 20, 487, 974, 1948, 2435, 4870, 9740, 17681, 35362, 70724, 88405, 176810, 353620, 8610647, 17221294, 34442588, 43053235, 86106470, 172212940]

約数ペア:

[(1, 172212940), (2, 86106470), (4, 43053235), (5, 34442588), (10, 17221294), (20, 8610647), (487, 353620), (974, 176810), (1948, 88405), (2435, 70724), (4870, 35362), (9740, 17681)]