81239210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{624917}}^1$

素因数の和:624937

約数の個数: 16

約数和(自身を含む): 157479336

約数和(自身を除く): 76240126

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 624917, 1249834, 3124585, 6249170, 8123921, 16247842, 40619605, 81239210]

約数ペア:

[(1, 81239210), (2, 40619605), (5, 16247842), (10, 8123921), (13, 6249170), (26, 3124585), (65, 1249834), (130, 624917)]