81315843

素因数分解:

$3^1\times 7^2\times {\mathrm{277}}^1\times {\mathrm{1997}}^1$

素因数の和:2291

約数の個数: 24

約数和(自身を含む): 126641232

約数和(自身を除く): 45325389

約数列:

[1, 3, 7, 21, 49, 147, 277, 831, 1939, 1997, 5817, 5991, 13573, 13979, 40719, 41937, 97853, 293559, 553169, 1659507, 3872183, 11616549, 27105281, 81315843]

約数ペア:

[(1, 81315843), (3, 27105281), (7, 11616549), (21, 3872183), (49, 1659507), (147, 553169), (277, 293559), (831, 97853), (1939, 41937), (1997, 40719), (5817, 13979), (5991, 13573)]