39998320

素因数分解:

$2^4\times 5^1\times {\mathrm{499979}}^1$

素因数の和:499992

約数の個数: 20

約数和(自身を含む): 92996280

約数和(自身を除く): 52997960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499979, 999958, 1999916, 2499895, 3999832, 4999790, 7999664, 9999580, 19999160, 39998320]

約数ペア:

[(1, 39998320), (2, 19999160), (4, 9999580), (5, 7999664), (8, 4999790), (10, 3999832), (16, 2499895), (20, 1999916), (40, 999958), (80, 499979)]