21540910

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{74279}}^1$

素因数の和:74315

約数の個数: 16

約数和(自身を含む): 40111200

約数和(自身を除く): 18570290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 74279, 148558, 371395, 742790, 2154091, 4308182, 10770455, 21540910]

約数ペア:

[(1, 21540910), (2, 10770455), (5, 4308182), (10, 2154091), (29, 742790), (58, 371395), (145, 148558), (290, 74279)]