81405420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{1356757}}^1$

素因数の和:1356769

約数の個数: 24

約数和(自身を含む): 227935344

約数和(自身を除く): 146529924

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1356757, 2713514, 4070271, 5427028, 6783785, 8140542, 13567570, 16281084, 20351355, 27135140, 40702710, 81405420]

約数ペア:

[(1, 81405420), (2, 40702710), (3, 27135140), (4, 20351355), (5, 16281084), (6, 13567570), (10, 8140542), (12, 6783785), (15, 5427028), (20, 4070271), (30, 2713514), (60, 1356757)]