72479920

素因数分解:

$2^4\times 5^1\times {\mathrm{905999}}^1$

素因数の和:906012

約数の個数: 20

約数和(自身を含む): 168516000

約数和(自身を除く): 96036080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 905999, 1811998, 3623996, 4529995, 7247992, 9059990, 14495984, 18119980, 36239960, 72479920]

約数ペア:

[(1, 72479920), (2, 36239960), (4, 18119980), (5, 14495984), (8, 9059990), (10, 7247992), (16, 4529995), (20, 3623996), (40, 1811998), (80, 905999)]