20297575

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{293}}^1$

素因数の和:483

約数の個数: 24

約数和(自身を含む): 26904528

約数和(自身を除く): 6606953

約数列:

[1, 5, 17, 25, 85, 163, 293, 425, 815, 1465, 2771, 4075, 4981, 7325, 13855, 24905, 47759, 69275, 124525, 238795, 811903, 1193975, 4059515, 20297575]

約数ペア:

[(1, 20297575), (5, 4059515), (17, 1193975), (25, 811903), (85, 238795), (163, 124525), (293, 69275), (425, 47759), (815, 24905), (1465, 13855), (2771, 7325), (4075, 4981)]