18612890

素因数分解:

$2^1\times 5^1\times {\mathrm{1321}}^1\times {\mathrm{1409}}^1$

素因数の和:2737

約数の個数: 16

約数和(自身を含む): 33552360

約数和(自身を除く): 14939470

約数列:

[1, 2, 5, 10, 1321, 1409, 2642, 2818, 6605, 7045, 13210, 14090, 1861289, 3722578, 9306445, 18612890]

約数ペア:

[(1, 18612890), (2, 9306445), (5, 3722578), (10, 1861289), (1321, 14090), (1409, 13210), (2642, 7045), (2818, 6605)]