640608865

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{113}}^1\times {\mathrm{6709}}^1$

素因数の和:6853

約数の個数: 24

約数和(自身を含む): 839904120

約数和(自身を除く): 199295255

約数列:

[1, 5, 13, 65, 113, 169, 565, 845, 1469, 6709, 7345, 19097, 33545, 87217, 95485, 436085, 758117, 1133821, 3790585, 5669105, 9855521, 49277605, 128121773, 640608865]

約数ペア:

[(1, 640608865), (5, 128121773), (13, 49277605), (65, 9855521), (113, 5669105), (169, 3790585), (565, 1133821), (845, 758117), (1469, 436085), (6709, 95485), (7345, 87217), (19097, 33545)]