28695640

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{3217}}^1$

素因数の和:3451

約数の個数: 32

約数和(自身を含む): 64874880

約数和(自身を除く): 36179240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 3217, 4460, 6434, 8920, 12868, 16085, 25736, 32170, 64340, 128680, 717391, 1434782, 2869564, 3586955, 5739128, 7173910, 14347820, 28695640]

約数ペア:

[(1, 28695640), (2, 14347820), (4, 7173910), (5, 5739128), (8, 3586955), (10, 2869564), (20, 1434782), (40, 717391), (223, 128680), (446, 64340), (892, 32170), (1115, 25736), (1784, 16085), (2230, 12868), (3217, 8920), (4460, 6434)]