20512390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{66169}}^1$

素因数の和:66207

約数の個数: 16

約数和(自身を含む): 38113920

約数和(自身を除く): 17601530

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 66169, 132338, 330845, 661690, 2051239, 4102478, 10256195, 20512390]

約数ペア:

[(1, 20512390), (2, 10256195), (5, 4102478), (10, 2051239), (31, 661690), (62, 330845), (155, 132338), (310, 66169)]