28245357

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 49390848

約数和(自身を除く): 21145491

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 101, 161, 193, 207, 303, 483, 579, 707, 909, 1351, 1449, 1737, 2121, 2323, 4053, 4439, 6363, 6969, 12159, 13317, 16261, 19493, 20907, 31073, 39951, 48783, 58479, 93219, 136451, 146349, 175437, 279657, 409353, 448339, 1228059, 1345017, 3138373, 4035051, 9415119, 28245357]

約数ペア:

[(1, 28245357), (3, 9415119), (7, 4035051), (9, 3138373), (21, 1345017), (23, 1228059), (63, 448339), (69, 409353), (101, 279657), (161, 175437), (193, 146349), (207, 136451), (303, 93219), (483, 58479), (579, 48783), (707, 39951), (909, 31073), (1351, 20907), (1449, 19493), (1737, 16261), (2121, 13317), (2323, 12159), (4053, 6969), (4439, 6363)]