81393615

素因数分解:

$3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{20323}}^1$

素因数の和:20423

約数の個数: 24

約数和(自身を含む): 142674480

約数和(自身を除く): 61280865

約数列:

[1, 3, 5, 9, 15, 45, 89, 267, 445, 801, 1335, 4005, 20323, 60969, 101615, 182907, 304845, 914535, 1808747, 5426241, 9043735, 16278723, 27131205, 81393615]

約数ペア:

[(1, 81393615), (3, 27131205), (5, 16278723), (9, 9043735), (15, 5426241), (45, 1808747), (89, 914535), (267, 304845), (445, 182907), (801, 101615), (1335, 60969), (4005, 20323)]