66404065

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{20849}}^1$

素因数の和:20881

約数の個数: 24

約数和(自身を含む): 99829800

約数和(自身を除く): 33425735

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 20849, 104245, 145943, 271037, 729715, 1021601, 1355185, 1897259, 5108005, 9486295, 13280813, 66404065]

約数ペア:

[(1, 66404065), (5, 13280813), (7, 9486295), (13, 5108005), (35, 1897259), (49, 1355185), (65, 1021601), (91, 729715), (245, 271037), (455, 145943), (637, 104245), (3185, 20849)]