21507620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56599}}^1$

素因数の和:56627

約数の個数: 24

約数和(自身を含む): 47544000

約数和(自身を除く): 26036380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56599, 113198, 226396, 282995, 565990, 1075381, 1131980, 2150762, 4301524, 5376905, 10753810, 21507620]

約数ペア:

[(1, 21507620), (2, 10753810), (4, 5376905), (5, 4301524), (10, 2150762), (19, 1131980), (20, 1075381), (38, 565990), (76, 282995), (95, 226396), (190, 113198), (380, 56599)]