81977655

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{7841}}^1$

素因数の和:7907

約数の個数: 32

約数和(自身を含む): 142285248

約数和(自身を除く): 60307593

約数列:

[1, 3, 5, 15, 17, 41, 51, 85, 123, 205, 255, 615, 697, 2091, 3485, 7841, 10455, 23523, 39205, 117615, 133297, 321481, 399891, 666485, 964443, 1607405, 1999455, 4822215, 5465177, 16395531, 27325885, 81977655]

約数ペア:

[(1, 81977655), (3, 27325885), (5, 16395531), (15, 5465177), (17, 4822215), (41, 1999455), (51, 1607405), (85, 964443), (123, 666485), (205, 399891), (255, 321481), (615, 133297), (697, 117615), (2091, 39205), (3485, 23523), (7841, 10455)]