80490020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{309577}}^1$

素因数の和:309599

約数の個数: 24

約数和(自身を含む): 182031864

約数和(自身を除く): 101541844

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 309577, 619154, 1238308, 1547885, 3095770, 4024501, 6191540, 8049002, 16098004, 20122505, 40245010, 80490020]

約数ペア:

[(1, 80490020), (2, 40245010), (4, 20122505), (5, 16098004), (10, 8049002), (13, 6191540), (20, 4024501), (26, 3095770), (52, 1547885), (65, 1238308), (130, 619154), (260, 309577)]