20291215

素因数分解:

$5^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{839}}^1$

素因数の和:1542

約数の個数: 16

約数和(自身を含む): 27901440

約数和(自身を除く): 7610225

約数列:

[1, 5, 7, 35, 691, 839, 3455, 4195, 4837, 5873, 24185, 29365, 579749, 2898745, 4058243, 20291215]

約数ペア:

[(1, 20291215), (5, 4058243), (7, 2898745), (35, 579749), (691, 29365), (839, 24185), (3455, 5873), (4195, 4837)]