28181187

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{1249}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 42900000

約数和(自身を除く): 14718813

約数列:

[1, 3, 9, 23, 69, 109, 207, 327, 981, 1249, 2507, 3747, 7521, 11241, 22563, 28727, 86181, 136141, 258543, 408423, 1225269, 3131243, 9393729, 28181187]

約数ペア:

[(1, 28181187), (3, 9393729), (9, 3131243), (23, 1225269), (69, 408423), (109, 258543), (207, 136141), (327, 86181), (981, 28727), (1249, 22563), (2507, 11241), (3747, 7521)]