81636009

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{42719}}^1$

素因数の和:42749

約数の個数: 24

約数和(自身を含む): 136362240

約数和(自身を除く): 54726231

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 42719, 128157, 299033, 555347, 897099, 1666041, 2093231, 3887429, 6279693, 11662287, 27212003, 81636009]

約数ペア:

[(1, 81636009), (3, 27212003), (7, 11662287), (13, 6279693), (21, 3887429), (39, 2093231), (49, 1666041), (91, 897099), (147, 555347), (273, 299033), (637, 128157), (1911, 42719)]