28820421

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4919}}^1$

素因数の和:4966

約数の個数: 32

約数和(自身を含む): 50380800

約数和(自身を除く): 21560379

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 93, 189, 217, 279, 651, 837, 1953, 4919, 5859, 14757, 34433, 44271, 103299, 132813, 152489, 309897, 457467, 929691, 1067423, 1372401, 3202269, 4117203, 9606807, 28820421]

約数ペア:

[(1, 28820421), (3, 9606807), (7, 4117203), (9, 3202269), (21, 1372401), (27, 1067423), (31, 929691), (63, 457467), (93, 309897), (189, 152489), (217, 132813), (279, 103299), (651, 44271), (837, 34433), (1953, 14757), (4919, 5859)]