81618785

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{10789}}^1$

素因数の和:10900

約数の個数: 16

約数和(自身を含む): 104878800

約数和(自身を除く): 23260015

約数列:

[1, 5, 17, 85, 89, 445, 1513, 7565, 10789, 53945, 183413, 917065, 960221, 4801105, 16323757, 81618785]

約数ペア:

[(1, 81618785), (5, 16323757), (17, 4801105), (85, 960221), (89, 917065), (445, 183413), (1513, 53945), (7565, 10789)]