15990160

素因数分解:

$2^4\times 5^1\times {\mathrm{199877}}^1$

素因数の和:199890

約数の個数: 20

約数和(自身を含む): 37177308

約数和(自身を除く): 21187148

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199877, 399754, 799508, 999385, 1599016, 1998770, 3198032, 3997540, 7995080, 15990160]

約数ペア:

[(1, 15990160), (2, 7995080), (4, 3997540), (5, 3198032), (8, 1998770), (10, 1599016), (16, 999385), (20, 799508), (40, 399754), (80, 199877)]