81348281

素因数分解:

$7^4\times {\mathrm{17}}^1\times {\mathrm{1993}}^1$

素因数の和:2038

約数の個数: 20

約数和(自身を含む): 100533492

約数和(自身を除く): 19185211

約数列:

[1, 7, 17, 49, 119, 343, 833, 1993, 2401, 5831, 13951, 33881, 40817, 97657, 237167, 683599, 1660169, 4785193, 11621183, 81348281]

約数ペア:

[(1, 81348281), (7, 11621183), (17, 4785193), (49, 1660169), (119, 683599), (343, 237167), (833, 97657), (1993, 40817), (2401, 33881), (5831, 13951)]