20956775

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3863}}^1$

素因数の和:3911

約数の個数: 24

約数和(自身を含む): 30664704

約数和(自身を除く): 9707929

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 775, 1085, 3863, 5425, 19315, 27041, 96575, 119753, 135205, 598765, 676025, 838271, 2993825, 4191355, 20956775]

約数ペア:

[(1, 20956775), (5, 4191355), (7, 2993825), (25, 838271), (31, 676025), (35, 598765), (155, 135205), (175, 119753), (217, 96575), (775, 27041), (1085, 19315), (3863, 5425)]