1998320

素因数分解:

$2^4\times 5^1\times {\mathrm{24979}}^1$

素因数の和:24992

約数の個数: 20

約数和(自身を含む): 4646280

約数和(自身を除く): 2647960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 24979, 49958, 99916, 124895, 199832, 249790, 399664, 499580, 999160, 1998320]

約数ペア:

[(1, 1998320), (2, 999160), (4, 499580), (5, 399664), (8, 249790), (10, 199832), (16, 124895), (20, 99916), (40, 49958), (80, 24979)]