28115721

素因数分解:

$3^3\times {\mathrm{239}}^1\times {\mathrm{4357}}^1$

素因数の和:4605

約数の個数: 16

約数和(自身を含む): 41836800

約数和(自身を除く): 13721079

約数列:

[1, 3, 9, 27, 239, 717, 2151, 4357, 6453, 13071, 39213, 117639, 1041323, 3123969, 9371907, 28115721]

約数ペア:

[(1, 28115721), (3, 9371907), (9, 3123969), (27, 1041323), (239, 117639), (717, 39213), (2151, 13071), (4357, 6453)]