64001440

素因数分解:

$2^5\times 5^1\times {\mathrm{400009}}^1$

素因数の和:400024

約数の個数: 24

約数和(自身を含む): 151203780

約数和(自身を除く): 87202340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 400009, 800018, 1600036, 2000045, 3200072, 4000090, 6400144, 8000180, 12800288, 16000360, 32000720, 64001440]

約数ペア:

[(1, 64001440), (2, 32000720), (4, 16000360), (5, 12800288), (8, 8000180), (10, 6400144), (16, 4000090), (20, 3200072), (32, 2000045), (40, 1600036), (80, 800018), (160, 400009)]