28388637

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{5231}}^1$

素因数の和:5310

約数の個数: 20

約数和(自身を含む): 43048896

約数和(自身を除く): 14660259

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 5231, 5427, 15693, 47079, 141237, 350477, 423711, 1051431, 3154293, 9462879, 28388637]

約数ペア:

[(1, 28388637), (3, 9462879), (9, 3154293), (27, 1051431), (67, 423711), (81, 350477), (201, 141237), (603, 47079), (1809, 15693), (5231, 5427)]