15959120

素因数分解:

$2^4\times 5^1\times {\mathrm{199489}}^1$

素因数の和:199502

約数の個数: 20

約数和(自身を含む): 37105140

約数和(自身を除く): 21146020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199489, 398978, 797956, 997445, 1595912, 1994890, 3191824, 3989780, 7979560, 15959120]

約数ペア:

[(1, 15959120), (2, 7979560), (4, 3989780), (5, 3191824), (8, 1994890), (10, 1595912), (16, 997445), (20, 797956), (40, 398978), (80, 199489)]