15959920

素因数分解:

$2^4\times 5^1\times {\mathrm{199499}}^1$

素因数の和:199512

約数の個数: 20

約数和(自身を含む): 37107000

約数和(自身を除く): 21147080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199499, 398998, 797996, 997495, 1595992, 1994990, 3191984, 3989980, 7979960, 15959920]

約数ペア:

[(1, 15959920), (2, 7979960), (4, 3989980), (5, 3191984), (8, 1994990), (10, 1595992), (16, 997495), (20, 797996), (40, 398998), (80, 199499)]