19720910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179281}}^1$

素因数の和:179299

約数の個数: 16

約数和(自身を含む): 38724912

約数和(自身を除く): 19004002

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 179281, 358562, 896405, 1792810, 1972091, 3944182, 9860455, 19720910]

約数ペア:

[(1, 19720910), (2, 9860455), (5, 3944182), (10, 1972091), (11, 1792810), (22, 896405), (55, 358562), (110, 179281)]