22400720

素因数分解:

$2^4\times 5^1\times {\mathrm{280009}}^1$

素因数の和:280022

約数の個数: 20

約数和(自身を含む): 52081860

約数和(自身を除く): 29681140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 280009, 560018, 1120036, 1400045, 2240072, 2800090, 4480144, 5600180, 11200360, 22400720]

約数ペア:

[(1, 22400720), (2, 11200360), (4, 5600180), (5, 4480144), (8, 2800090), (10, 2240072), (16, 1400045), (20, 1120036), (40, 560018), (80, 280009)]