31687281

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:255

約数の個数: 40

約数和(自身を含む): 49566440

約数和(自身を除く): 17879159

約数列:

[1, 3, 9, 27, 37, 81, 97, 109, 111, 291, 327, 333, 873, 981, 999, 2619, 2943, 2997, 3589, 4033, 7857, 8829, 10573, 10767, 12099, 31719, 32301, 36297, 95157, 96903, 108891, 285471, 290709, 326673, 391201, 856413, 1173603, 3520809, 10562427, 31687281]

約数ペア:

[(1, 31687281), (3, 10562427), (9, 3520809), (27, 1173603), (37, 856413), (81, 391201), (97, 326673), (109, 290709), (111, 285471), (291, 108891), (327, 96903), (333, 95157), (873, 36297), (981, 32301), (999, 31719), (2619, 12099), (2943, 10767), (2997, 10573), (3589, 8829), (4033, 7857)]