28021707

素因数分解:

$3^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{677}}^1$

素因数の和:769

約数の個数: 40

約数和(自身を含む): 48566496

約数和(自身を除く): 20544789

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 81, 189, 219, 511, 567, 657, 677, 1533, 1971, 2031, 4599, 4739, 5913, 6093, 13797, 14217, 18279, 41391, 42651, 49421, 54837, 127953, 148263, 345947, 383859, 444789, 1037841, 1334367, 3113523, 4003101, 9340569, 28021707]

約数ペア:

[(1, 28021707), (3, 9340569), (7, 4003101), (9, 3113523), (21, 1334367), (27, 1037841), (63, 444789), (73, 383859), (81, 345947), (189, 148263), (219, 127953), (511, 54837), (567, 49421), (657, 42651), (677, 41391), (1533, 18279), (1971, 14217), (2031, 13797), (4599, 6093), (4739, 5913)]