20564895

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{647}}^1$

素因数の和:831

約数の個数: 32

約数和(自身を含む): 35707392

約数和(自身を除く): 15142497

約数列:

[1, 3, 5, 13, 15, 39, 65, 163, 195, 489, 647, 815, 1941, 2119, 2445, 3235, 6357, 8411, 9705, 10595, 25233, 31785, 42055, 105461, 126165, 316383, 527305, 1370993, 1581915, 4112979, 6854965, 20564895]

約数ペア:

[(1, 20564895), (3, 6854965), (5, 4112979), (13, 1581915), (15, 1370993), (39, 527305), (65, 316383), (163, 126165), (195, 105461), (489, 42055), (647, 31785), (815, 25233), (1941, 10595), (2119, 9705), (2445, 8411), (3235, 6357)]