9998320

素因数分解:

$2^4\times 5^1\times {\mathrm{124979}}^1$

素因数の和:124992

約数の個数: 20

約数和(自身を含む): 23246280

約数和(自身を除く): 13247960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 124979, 249958, 499916, 624895, 999832, 1249790, 1999664, 2499580, 4999160, 9998320]

約数ペア:

[(1, 9998320), (2, 4999160), (4, 2499580), (5, 1999664), (8, 1249790), (10, 999832), (16, 624895), (20, 499916), (40, 249958), (80, 124979)]