81187015

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1637}}^1$

素因数の和:1771

約数の個数: 32

約数和(自身を含む): 121080960

約数和(自身を除く): 39893945

約数列:

[1, 5, 7, 13, 35, 65, 91, 109, 455, 545, 763, 1417, 1637, 3815, 7085, 8185, 9919, 11459, 21281, 49595, 57295, 106405, 148967, 178433, 744835, 892165, 1249031, 2319629, 6245155, 11598145, 16237403, 81187015]

約数ペア:

[(1, 81187015), (5, 16237403), (7, 11598145), (13, 6245155), (35, 2319629), (65, 1249031), (91, 892165), (109, 744835), (455, 178433), (545, 148967), (763, 106405), (1417, 57295), (1637, 49595), (3815, 21281), (7085, 11459), (8185, 9919)]