18721055

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1\times {\mathrm{449}}^1$

素因数の和:754

約数の個数: 16

約数和(自身を含む): 23328000

約数和(自身を除く): 4606945

約数列:

[1, 5, 31, 155, 269, 449, 1345, 2245, 8339, 13919, 41695, 69595, 120781, 603905, 3744211, 18721055]

約数ペア:

[(1, 18721055), (5, 3744211), (31, 603905), (155, 120781), (269, 69595), (449, 41695), (1345, 13919), (2245, 8339)]