28478313

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1087}}^1$

素因数の和:1205

約数の個数: 24

約数和(自身を含む): 42771456

約数和(自身を除く): 14293143

約数列:

[1, 3, 9, 41, 71, 123, 213, 369, 639, 1087, 2911, 3261, 8733, 9783, 26199, 44567, 77177, 133701, 231531, 401103, 694593, 3164257, 9492771, 28478313]

約数ペア:

[(1, 28478313), (3, 9492771), (9, 3164257), (41, 694593), (71, 401103), (123, 231531), (213, 133701), (369, 77177), (639, 44567), (1087, 26199), (2911, 9783), (3261, 8733)]