18748821

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{9811}}^1$

素因数の和:9841

約数の個数: 24

約数和(自身を含む): 31319904

約数和(自身を除く): 12571083

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 9811, 29433, 68677, 127543, 206031, 382629, 480739, 892801, 1442217, 2678403, 6249607, 18748821]

約数ペア:

[(1, 18748821), (3, 6249607), (7, 2678403), (13, 1442217), (21, 892801), (39, 480739), (49, 382629), (91, 206031), (147, 127543), (273, 68677), (637, 29433), (1911, 9811)]