21348615

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1481}}^1$

素因数の和:1551

約数の個数: 24

約数和(自身を含む): 35319024

約数和(自身を除く): 13970409

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 961, 1481, 2883, 4443, 4805, 7405, 14415, 22215, 45911, 137733, 229555, 688665, 1423241, 4269723, 7116205, 21348615]

約数ペア:

[(1, 21348615), (3, 7116205), (5, 4269723), (15, 1423241), (31, 688665), (93, 229555), (155, 137733), (465, 45911), (961, 22215), (1481, 14415), (2883, 7405), (4443, 4805)]