19747225

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{563}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 26016192

約数和(自身を除く): 6268967

約数列:

[1, 5, 23, 25, 61, 115, 305, 563, 575, 1403, 1525, 2815, 7015, 12949, 14075, 34343, 35075, 64745, 171715, 323725, 789889, 858575, 3949445, 19747225]

約数ペア:

[(1, 19747225), (5, 3949445), (23, 858575), (25, 789889), (61, 323725), (115, 171715), (305, 64745), (563, 35075), (575, 34343), (1403, 14075), (1525, 12949), (2815, 7015)]