12719020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15511}}^1$

素因数の和:15561

約数の個数: 24

約数和(自身を含む): 27363168

約数和(自身を除く): 14644148

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 15511, 31022, 62044, 77555, 155110, 310220, 635951, 1271902, 2543804, 3179755, 6359510, 12719020]

約数ペア:

[(1, 12719020), (2, 6359510), (4, 3179755), (5, 2543804), (10, 1271902), (20, 635951), (41, 310220), (82, 155110), (164, 77555), (205, 62044), (410, 31022), (820, 15511)]