20977335

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 38342304

約数和(自身を除く): 17364969

約数列:

[1, 3, 5, 9, 15, 37, 43, 45, 111, 129, 185, 215, 293, 333, 387, 555, 645, 879, 1465, 1591, 1665, 1935, 2637, 4395, 4773, 7955, 10841, 12599, 13185, 14319, 23865, 32523, 37797, 54205, 62995, 71595, 97569, 113391, 162615, 188985, 466163, 487845, 566955, 1398489, 2330815, 4195467, 6992445, 20977335]

約数ペア:

[(1, 20977335), (3, 6992445), (5, 4195467), (9, 2330815), (15, 1398489), (37, 566955), (43, 487845), (45, 466163), (111, 188985), (129, 162615), (185, 113391), (215, 97569), (293, 71595), (333, 62995), (387, 54205), (555, 37797), (645, 32523), (879, 23865), (1465, 14319), (1591, 13185), (1665, 12599), (1935, 10841), (2637, 7955), (4395, 4773)]