21515019

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1\times {\mathrm{811}}^1$

素因数の和:1090

約数の個数: 16

約数和(自身を含む): 29621760

約数和(自身を除く): 8106741

約数列:

[1, 3, 37, 111, 239, 717, 811, 2433, 8843, 26529, 30007, 90021, 193829, 581487, 7171673, 21515019]

約数ペア:

[(1, 21515019), (3, 7171673), (37, 581487), (111, 193829), (239, 90021), (717, 30007), (811, 26529), (2433, 8843)]