15721485

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2179}}^1$

素因数の和:2237

約数の個数: 32

約数和(自身を含む): 27834240

約数和(自身を除く): 12112755

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2179, 2405, 6537, 7215, 10895, 28327, 32685, 80623, 84981, 141635, 241869, 403115, 424905, 1048099, 1209345, 3144297, 5240495, 15721485]

約数ペア:

[(1, 15721485), (3, 5240495), (5, 3144297), (13, 1209345), (15, 1048099), (37, 424905), (39, 403115), (65, 241869), (111, 141635), (185, 84981), (195, 80623), (481, 32685), (555, 28327), (1443, 10895), (2179, 7215), (2405, 6537)]