21353415

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34721}}^1$

素因数の和:34770

約数の個数: 16

約数和(自身を含む): 34999776

約数和(自身を除く): 13646361

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 34721, 104163, 173605, 520815, 1423561, 4270683, 7117805, 21353415]

約数ペア:

[(1, 21353415), (3, 7117805), (5, 4270683), (15, 1423561), (41, 520815), (123, 173605), (205, 104163), (615, 34721)]