20986324184

素因数分解:

$2^3\times 7^1\times {\mathrm{19937}}^1\times {\mathrm{18797}}^1$

素因数の和:38747

約数の個数: 32

約数和(自身を含む): 44975342880

約数和(自身を除く): 23989018696

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 18797, 19937, 37594, 39874, 75188, 79748, 131579, 139559, 150376, 159496, 263158, 279118, 526316, 558236, 1052632, 1116472, 374755789, 749511578, 1499023156, 2623290523, 2998046312, 5246581046, 10493162092, 20986324184]

約数ペア:

[(1, 20986324184), (2, 10493162092), (4, 5246581046), (7, 2998046312), (8, 2623290523), (14, 1499023156), (28, 749511578), (56, 374755789), (18797, 1116472), (19937, 1052632), (37594, 558236), (39874, 526316), (75188, 279118), (79748, 263158), (131579, 159496), (139559, 150376)]