40019920

素因数分解:

$2^4\times 5^1\times {\mathrm{500249}}^1$

素因数の和:500262

約数の個数: 20

約数和(自身を含む): 93046500

約数和(自身を除く): 53026580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 500249, 1000498, 2000996, 2501245, 4001992, 5002490, 8003984, 10004980, 20009960, 40019920]

約数ペア:

[(1, 40019920), (2, 20009960), (4, 10004980), (5, 8003984), (8, 5002490), (10, 4001992), (16, 2501245), (20, 2000996), (40, 1000498), (80, 500249)]