39999160

素因数分解:

$2^3\times 5^1\times {\mathrm{999979}}^1$

素因数の和:999990

約数の個数: 16

約数和(自身を含む): 89998200

約数和(自身を除く): 49999040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 999979, 1999958, 3999916, 4999895, 7999832, 9999790, 19999580, 39999160]

約数ペア:

[(1, 39999160), (2, 19999580), (4, 9999790), (5, 7999832), (8, 4999895), (10, 3999916), (20, 1999958), (40, 999979)]