28119905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 39398400

約数和(自身を除く): 11278495

約数列:

[1, 5, 11, 19, 55, 71, 95, 209, 355, 379, 781, 1045, 1349, 1895, 3905, 4169, 6745, 7201, 14839, 20845, 26909, 36005, 74195, 79211, 134545, 295999, 396055, 511271, 1479995, 2556355, 5623981, 28119905]

約数ペア:

[(1, 28119905), (5, 5623981), (11, 2556355), (19, 1479995), (55, 511271), (71, 396055), (95, 295999), (209, 134545), (355, 79211), (379, 74195), (781, 36005), (1045, 26909), (1349, 20845), (1895, 14839), (3905, 7201), (4169, 6745)]