12847815

素因数分解:

$3^4\times 5^1\times {\mathrm{31723}}^1$

素因数の和:31740

約数の個数: 20

約数和(自身を含む): 23031624

約数和(自身を除く): 10183809

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 31723, 95169, 158615, 285507, 475845, 856521, 1427535, 2569563, 4282605, 12847815]

約数ペア:

[(1, 12847815), (3, 4282605), (5, 2569563), (9, 1427535), (15, 856521), (27, 475845), (45, 285507), (81, 158615), (135, 95169), (405, 31723)]