20437755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{643}}^1$

素因数の和:827

約数の個数: 32

約数和(自身を含む): 35486976

約数和(自身を除く): 15049221

約数列:

[1, 3, 5, 13, 15, 39, 65, 163, 195, 489, 643, 815, 1929, 2119, 2445, 3215, 6357, 8359, 9645, 10595, 25077, 31785, 41795, 104809, 125385, 314427, 524045, 1362517, 1572135, 4087551, 6812585, 20437755]

約数ペア:

[(1, 20437755), (3, 6812585), (5, 4087551), (13, 1572135), (15, 1362517), (39, 524045), (65, 314427), (163, 125385), (195, 104809), (489, 41795), (643, 31785), (815, 25077), (1929, 10595), (2119, 9645), (2445, 8359), (3215, 6357)]