13210815

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{21481}}^1$

素因数の和:21530

約数の個数: 16

約数和(自身を含む): 21653856

約数和(自身を除く): 8443041

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 21481, 64443, 107405, 322215, 880721, 2642163, 4403605, 13210815]

約数ペア:

[(1, 13210815), (3, 4403605), (5, 2642163), (15, 880721), (41, 322215), (123, 107405), (205, 64443), (615, 21481)]