12447920

素因数分解:

$2^4\times 5^1\times {\mathrm{155599}}^1$

素因数の和:155612

約数の個数: 20

約数和(自身を含む): 28941600

約数和(自身を除く): 16493680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 155599, 311198, 622396, 777995, 1244792, 1555990, 2489584, 3111980, 6223960, 12447920]

約数ペア:

[(1, 12447920), (2, 6223960), (4, 3111980), (5, 2489584), (8, 1555990), (10, 1244792), (16, 777995), (20, 622396), (40, 311198), (80, 155599)]