28190997

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:255

約数の個数: 40

約数和(自身を含む): 44295680

約数和(自身を除く): 16104683

約数列:

[1, 3, 9, 27, 31, 81, 93, 103, 109, 279, 309, 327, 837, 927, 981, 2511, 2781, 2943, 3193, 3379, 8343, 8829, 9579, 10137, 11227, 28737, 30411, 33681, 86211, 91233, 101043, 258633, 273699, 303129, 348037, 909387, 1044111, 3132333, 9396999, 28190997]

約数ペア:

[(1, 28190997), (3, 9396999), (9, 3132333), (27, 1044111), (31, 909387), (81, 348037), (93, 303129), (103, 273699), (109, 258633), (279, 101043), (309, 91233), (327, 86211), (837, 33681), (927, 30411), (981, 28737), (2511, 11227), (2781, 10137), (2943, 9579), (3193, 8829), (3379, 8343)]