21008195

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{7883}}^1$

素因数の和:7942

約数の個数: 16

約数和(自身を含む): 27814752

約数和(自身を除く): 6806557

約数列:

[1, 5, 13, 41, 65, 205, 533, 2665, 7883, 39415, 102479, 323203, 512395, 1616015, 4201639, 21008195]

約数ペア:

[(1, 21008195), (5, 4201639), (13, 1616015), (41, 512395), (65, 323203), (205, 102479), (533, 39415), (2665, 7883)]