20873307

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{487}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 34542592

約数和(自身を除く): 13669285

約数列:

[1, 3, 7, 13, 21, 39, 91, 157, 273, 471, 487, 1099, 1461, 2041, 3297, 3409, 6123, 6331, 10227, 14287, 18993, 42861, 44317, 76459, 132951, 229377, 535213, 993967, 1605639, 2981901, 6957769, 20873307]

約数ペア:

[(1, 20873307), (3, 6957769), (7, 2981901), (13, 1605639), (21, 993967), (39, 535213), (91, 229377), (157, 132951), (273, 76459), (471, 44317), (487, 42861), (1099, 18993), (1461, 14287), (2041, 10227), (3297, 6331), (3409, 6123)]