221097513

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{487}}^1\times {\mathrm{1663}}^1$

素因数の和:2173

約数の個数: 32

約数和(自身を含む): 363790336

約数和(自身を除く): 142692823

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 487, 1461, 1663, 3409, 4989, 6331, 10227, 11641, 18993, 21619, 34923, 44317, 64857, 132951, 151333, 453999, 809881, 2429643, 5669167, 10528453, 17007501, 31585359, 73699171, 221097513]

約数ペア:

[(1, 221097513), (3, 73699171), (7, 31585359), (13, 17007501), (21, 10528453), (39, 5669167), (91, 2429643), (273, 809881), (487, 453999), (1461, 151333), (1663, 132951), (3409, 64857), (4989, 44317), (6331, 34923), (10227, 21619), (11641, 18993)]