28239175

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:403

約数の個数: 24

約数和(自身を含む): 36309680

約数和(自身を除く): 8070505

約数列:

[1, 5, 25, 43, 109, 215, 241, 545, 1075, 1205, 2725, 4687, 6025, 10363, 23435, 26269, 51815, 117175, 131345, 259075, 656725, 1129567, 5647835, 28239175]

約数ペア:

[(1, 28239175), (5, 5647835), (25, 1129567), (43, 656725), (109, 259075), (215, 131345), (241, 117175), (545, 51815), (1075, 26269), (1205, 23435), (2725, 10363), (4687, 6025)]