81241628

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{971}}^1\times {\mathrm{1609}}^1$

素因数の和:2597

約数の個数: 24

約数和(自身を含む): 153362160

約数和(自身を除く): 72120532

約数列:

[1, 2, 4, 13, 26, 52, 971, 1609, 1942, 3218, 3884, 6436, 12623, 20917, 25246, 41834, 50492, 83668, 1562339, 3124678, 6249356, 20310407, 40620814, 81241628]

約数ペア:

[(1, 81241628), (2, 40620814), (4, 20310407), (13, 6249356), (26, 3124678), (52, 1562339), (971, 83668), (1609, 50492), (1942, 41834), (3218, 25246), (3884, 20917), (6436, 12623)]