21345051

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1907}}^1$

素因数の和:1971

約数の個数: 32

約数和(自身を含む): 35900928

約数和(自身を除く): 14555877

約数列:

[1, 3, 7, 13, 21, 39, 41, 91, 123, 273, 287, 533, 861, 1599, 1907, 3731, 5721, 11193, 13349, 24791, 40047, 74373, 78187, 173537, 234561, 520611, 547309, 1016431, 1641927, 3049293, 7115017, 21345051]

約数ペア:

[(1, 21345051), (3, 7115017), (7, 3049293), (13, 1641927), (21, 1016431), (39, 547309), (41, 520611), (91, 234561), (123, 173537), (273, 78187), (287, 74373), (533, 40047), (861, 24791), (1599, 13349), (1907, 11193), (3731, 5721)]