81913839

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{12959}}^1$

素因数の和:13019

約数の個数: 24

約数和(自身を含む): 130014720

約数和(自身を除く): 48100881

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 301, 903, 2107, 6321, 12959, 38877, 90713, 272139, 557237, 634991, 1671711, 1904973, 3900659, 11701977, 27304613, 81913839]

約数ペア:

[(1, 81913839), (3, 27304613), (7, 11701977), (21, 3900659), (43, 1904973), (49, 1671711), (129, 634991), (147, 557237), (301, 272139), (903, 90713), (2107, 38877), (6321, 12959)]