31840

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1$

素因数の和:214

約数の個数: 24

約数和(自身を含む): 75600

約数和(自身を除く): 43760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 6368, 7960, 15920, 31840]

約数ペア:

[(1, 31840), (2, 15920), (4, 7960), (5, 6368), (8, 3980), (10, 3184), (16, 1990), (20, 1592), (32, 995), (40, 796), (80, 398), (160, 199)]