28918701

素因数分解:

$3^7\times 7^1\times {\mathrm{1889}}^1$

素因数の和:1917

約数の個数: 32

約数和(自身を含む): 49593600

約数和(自身を除く): 20674899

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 1889, 2187, 5103, 5667, 13223, 15309, 17001, 39669, 51003, 119007, 153009, 357021, 459027, 1071063, 1377081, 3213189, 4131243, 9639567, 28918701]

約数ペア:

[(1, 28918701), (3, 9639567), (7, 4131243), (9, 3213189), (21, 1377081), (27, 1071063), (63, 459027), (81, 357021), (189, 153009), (243, 119007), (567, 51003), (729, 39669), (1701, 17001), (1889, 15309), (2187, 13223), (5103, 5667)]