19801725

素因数分解:

$3^1\times 5^2\times {\mathrm{83}}^1\times {\mathrm{3181}}^1$

素因数の和:3277

約数の個数: 24

約数和(自身を含む): 33143712

約数和(自身を除く): 13341987

約数列:

[1, 3, 5, 15, 25, 75, 83, 249, 415, 1245, 2075, 3181, 6225, 9543, 15905, 47715, 79525, 238575, 264023, 792069, 1320115, 3960345, 6600575, 19801725]

約数ペア:

[(1, 19801725), (3, 6600575), (5, 3960345), (15, 1320115), (25, 792069), (75, 264023), (83, 238575), (249, 79525), (415, 47715), (1245, 15905), (2075, 9543), (3181, 6225)]