7287920

素因数分解:

$2^4\times 5^1\times {\mathrm{91099}}^1$

素因数の和:91112

約数の個数: 20

約数和(自身を含む): 16944600

約数和(自身を除く): 9656680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 91099, 182198, 364396, 455495, 728792, 910990, 1457584, 1821980, 3643960, 7287920]

約数ペア:

[(1, 7287920), (2, 3643960), (4, 1821980), (5, 1457584), (8, 910990), (10, 728792), (16, 455495), (20, 364396), (40, 182198), (80, 91099)]