21367845

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10103}}^1$

素因数の和:10161

約数の個数: 24

約数和(自身を含む): 37829376

約数和(自身を除く): 16461531

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 10103, 30309, 50515, 90927, 151545, 454635, 474841, 1424523, 2374205, 4273569, 7122615, 21367845]

約数ペア:

[(1, 21367845), (3, 7122615), (5, 4273569), (9, 2374205), (15, 1424523), (45, 474841), (47, 454635), (141, 151545), (235, 90927), (423, 50515), (705, 30309), (2115, 10103)]