80604980

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{12959}}^1$

素因数の和:13279

約数の個数: 24

約数和(自身を含む): 169827840

約数和(自身を除く): 89222860

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 1244, 1555, 3110, 6220, 12959, 25918, 51836, 64795, 129590, 259180, 4030249, 8060498, 16120996, 20151245, 40302490, 80604980]

約数ペア:

[(1, 80604980), (2, 40302490), (4, 20151245), (5, 16120996), (10, 8060498), (20, 4030249), (311, 259180), (622, 129590), (1244, 64795), (1555, 51836), (3110, 25918), (6220, 12959)]