40007960

素因数分解:

$2^3\times 5^1\times {\mathrm{1000199}}^1$

素因数の和:1000210

約数の個数: 16

約数和(自身を含む): 90018000

約数和(自身を除く): 50010040

約数列:

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

約数ペア:

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