80015920

素因数分解:

$2^4\times 5^1\times {\mathrm{1000199}}^1$

素因数の和:1000212

約数の個数: 20

約数和(自身を含む): 186037200

約数和(自身を除く): 106021280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1000199, 2000398, 4000796, 5000995, 8001592, 10001990, 16003184, 20003980, 40007960, 80015920]

約数ペア:

[(1, 80015920), (2, 40007960), (4, 20003980), (5, 16003184), (8, 10001990), (10, 8001592), (16, 5000995), (20, 4000796), (40, 2000398), (80, 1000199)]