18515217

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{6343}}^1$

素因数の和:6492

約数の個数: 16

約数和(自身を含む): 28421120

約数和(自身を除く): 9905903

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 6343, 19029, 44401, 133203, 881677, 2645031, 6171739, 18515217]

約数ペア:

[(1, 18515217), (3, 6171739), (7, 2645031), (21, 881677), (139, 133203), (417, 44401), (973, 19029), (2919, 6343)]