15678618320

素因数分解:

$2^4\times 5^1\times {\mathrm{195982729}}^1$

素因数の和:195982742

約数の個数: 20

約数和(自身を含む): 36452787780

約数和(自身を除く): 20774169460

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 195982729, 391965458, 783930916, 979913645, 1567861832, 1959827290, 3135723664, 3919654580, 7839309160, 15678618320]

約数ペア:

[(1, 15678618320), (2, 7839309160), (4, 3919654580), (5, 3135723664), (8, 1959827290), (10, 1567861832), (16, 979913645), (20, 783930916), (40, 391965458), (80, 195982729)]