15680240

素因数分解:

$2^4\times 5^1\times {\mathrm{196003}}^1$

素因数の和:196016

約数の個数: 20

約数和(自身を含む): 36456744

約数和(自身を除く): 20776504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 196003, 392006, 784012, 980015, 1568024, 1960030, 3136048, 3920060, 7840120, 15680240]

約数ペア:

[(1, 15680240), (2, 7840120), (4, 3920060), (5, 3136048), (8, 1960030), (10, 1568024), (16, 980015), (20, 784012), (40, 392006), (80, 196003)]