21506433

素因数分解:

$3^1\times {\mathrm{13}}^4\times {\mathrm{251}}^1$

素因数の和:306

約数の個数: 20

約数和(自身を含む): 31188528

約数和(自身を除く): 9682095

約数列:

[1, 3, 13, 39, 169, 251, 507, 753, 2197, 3263, 6591, 9789, 28561, 42419, 85683, 127257, 551447, 1654341, 7168811, 21506433]

約数ペア:

[(1, 21506433), (3, 7168811), (13, 1654341), (39, 551447), (169, 127257), (251, 85683), (507, 42419), (753, 28561), (2197, 9789), (3263, 6591)]