19784825

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{293}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 25628568

約数和(自身を除く): 5843743

約数列:

[1, 5, 25, 37, 73, 185, 293, 365, 925, 1465, 1825, 2701, 7325, 10841, 13505, 21389, 54205, 67525, 106945, 271025, 534725, 791393, 3956965, 19784825]

約数ペア:

[(1, 19784825), (5, 3956965), (25, 791393), (37, 534725), (73, 271025), (185, 106945), (293, 67525), (365, 54205), (925, 21389), (1465, 13505), (1825, 10841), (2701, 7325)]