12784915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17881}}^1$

素因数の和:17910

約数の個数: 16

約数和(自身を含む): 18025056

約数和(自身を除く): 5240141

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 17881, 89405, 196691, 232453, 983455, 1162265, 2556983, 12784915]

約数ペア:

[(1, 12784915), (5, 2556983), (11, 1162265), (13, 983455), (55, 232453), (65, 196691), (143, 89405), (715, 17881)]