81379845

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{25471}}^1$

素因数の和:25553

約数の個数: 24

約数和(自身を含む): 143050752

約数和(自身を除く): 61670907

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 25471, 76413, 127355, 229239, 382065, 1146195, 1808441, 5425323, 9042205, 16275969, 27126615, 81379845]

約数ペア:

[(1, 81379845), (3, 27126615), (5, 16275969), (9, 9042205), (15, 5425323), (45, 1808441), (71, 1146195), (213, 382065), (355, 229239), (639, 127355), (1065, 76413), (3195, 25471)]