78858320

素因数分解:

$2^4\times 5^1\times {\mathrm{985729}}^1$

素因数の和:985742

約数の個数: 20

約数和(自身を含む): 183345780

約数和(自身を除く): 104487460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 985729, 1971458, 3942916, 4928645, 7885832, 9857290, 15771664, 19714580, 39429160, 78858320]

約数ペア:

[(1, 78858320), (2, 39429160), (4, 19714580), (5, 15771664), (8, 9857290), (10, 7885832), (16, 4928645), (20, 3942916), (40, 1971458), (80, 985729)]