25600720

素因数分解:

$2^4\times 5^1\times {\mathrm{320009}}^1$

素因数の和:320022

約数の個数: 20

約数和(自身を含む): 59521860

約数和(自身を除く): 33921140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 320009, 640018, 1280036, 1600045, 2560072, 3200090, 5120144, 6400180, 12800360, 25600720]

約数ペア:

[(1, 25600720), (2, 12800360), (4, 6400180), (5, 5120144), (8, 3200090), (10, 2560072), (16, 1600045), (20, 1280036), (40, 640018), (80, 320009)]