20159905

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{2287}}^1$

素因数の和:2376

約数の個数: 16

約数和(自身を含む): 25369344

約数和(自身を除く): 5209439

約数列:

[1, 5, 41, 43, 205, 215, 1763, 2287, 8815, 11435, 93767, 98341, 468835, 491705, 4031981, 20159905]

約数ペア:

[(1, 20159905), (5, 4031981), (41, 491705), (43, 468835), (205, 98341), (215, 93767), (1763, 11435), (2287, 8815)]