28918539

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{947}}^1$

素因数の和:1001

約数の個数: 40

約数和(自身を含む): 48177360

約数和(自身を除く): 19258821

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 783, 947, 1053, 1131, 2349, 2841, 3393, 8523, 10179, 12311, 25569, 27463, 30537, 36933, 76707, 82389, 110799, 247167, 332397, 357019, 741501, 997191, 1071057, 2224503, 3213171, 9639513, 28918539]

約数ペア:

[(1, 28918539), (3, 9639513), (9, 3213171), (13, 2224503), (27, 1071057), (29, 997191), (39, 741501), (81, 357019), (87, 332397), (117, 247167), (261, 110799), (351, 82389), (377, 76707), (783, 36933), (947, 30537), (1053, 27463), (1131, 25569), (2349, 12311), (2841, 10179), (3393, 8523)]