21265690

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{379}}^1$

素因数の和:598

約数の個数: 32

約数和(自身を含む): 39836160

約数和(自身を除く): 18570470

約数列:

[1, 2, 5, 10, 31, 62, 155, 181, 310, 362, 379, 758, 905, 1810, 1895, 3790, 5611, 11222, 11749, 23498, 28055, 56110, 58745, 68599, 117490, 137198, 342995, 685990, 2126569, 4253138, 10632845, 21265690]

約数ペア:

[(1, 21265690), (2, 10632845), (5, 4253138), (10, 2126569), (31, 685990), (62, 342995), (155, 137198), (181, 117490), (310, 68599), (362, 58745), (379, 56110), (758, 28055), (905, 23498), (1810, 11749), (1895, 11222), (3790, 5611)]