9989500

素因数分解:

$2^2\times 5^3\times {\mathrm{19979}}^1$

素因数の和:19998

約数の個数: 24

約数和(自身を含む): 21818160

約数和(自身を除く): 11828660

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 19979, 39958, 79916, 99895, 199790, 399580, 499475, 998950, 1997900, 2497375, 4994750, 9989500]

約数ペア:

[(1, 9989500), (2, 4994750), (4, 2497375), (5, 1997900), (10, 998950), (20, 499475), (25, 399580), (50, 199790), (100, 99895), (125, 79916), (250, 39958), (500, 19979)]