20339540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78229}}^1$

素因数の和:78251

約数の個数: 24

約数和(自身を含む): 45999240

約数和(自身を除く): 25659700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78229, 156458, 312916, 391145, 782290, 1016977, 1564580, 2033954, 4067908, 5084885, 10169770, 20339540]

約数ペア:

[(1, 20339540), (2, 10169770), (4, 5084885), (5, 4067908), (10, 2033954), (13, 1564580), (20, 1016977), (26, 782290), (52, 391145), (65, 312916), (130, 156458), (260, 78229)]