399440079

素因数分解:

$3^4\times {\mathrm{907}}^1\times {\mathrm{5437}}^1$

素因数の和:6356

約数の個数: 20

約数和(自身を含む): 597462184

約数和(自身を除く): 198022105

約数列:

[1, 3, 9, 27, 81, 907, 2721, 5437, 8163, 16311, 24489, 48933, 73467, 146799, 440397, 4931359, 14794077, 44382231, 133146693, 399440079]

約数ペア:

[(1, 399440079), (3, 133146693), (9, 44382231), (27, 14794077), (81, 4931359), (907, 440397), (2721, 146799), (5437, 73467), (8163, 48933), (16311, 24489)]