28421127

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^2\times {\mathrm{223}}^1$

素因数の和:277

約数の個数: 54

約数和(自身を含む): 50957088

約数和(自身を除く): 22535961

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 119, 147, 153, 223, 289, 357, 441, 669, 833, 867, 1071, 1561, 2007, 2023, 2499, 2601, 3791, 4683, 6069, 7497, 10927, 11373, 14049, 14161, 18207, 26537, 32781, 34119, 42483, 64447, 79611, 98343, 127449, 185759, 193341, 238833, 451129, 557277, 580023, 1353387, 1671831, 3157903, 4060161, 9473709, 28421127]

約数ペア:

[(1, 28421127), (3, 9473709), (7, 4060161), (9, 3157903), (17, 1671831), (21, 1353387), (49, 580023), (51, 557277), (63, 451129), (119, 238833), (147, 193341), (153, 185759), (223, 127449), (289, 98343), (357, 79611), (441, 64447), (669, 42483), (833, 34119), (867, 32781), (1071, 26537), (1561, 18207), (2007, 14161), (2023, 14049), (2499, 11373), (2601, 10927), (3791, 7497), (4683, 6069)]