28178985

素因数分解:

$3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 46230912

約数和(自身を除く): 18051927

約数列:

[1, 3, 5, 15, 97, 107, 181, 291, 321, 485, 535, 543, 905, 1455, 1605, 2715, 10379, 17557, 19367, 31137, 51895, 52671, 58101, 87785, 96835, 155685, 263355, 290505, 1878599, 5635797, 9392995, 28178985]

約数ペア:

[(1, 28178985), (3, 9392995), (5, 5635797), (15, 1878599), (97, 290505), (107, 263355), (181, 155685), (291, 96835), (321, 87785), (485, 58101), (535, 52671), (543, 51895), (905, 31137), (1455, 19367), (1605, 17557), (2715, 10379)]