8220400

素因数分解:

$2^4\times 5^2\times {\mathrm{20551}}^1$

素因数の和:20569

約数の個数: 30

約数和(自身を含む): 19750472

約数和(自身を除く): 11530072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 20551, 41102, 82204, 102755, 164408, 205510, 328816, 411020, 513775, 822040, 1027550, 1644080, 2055100, 4110200, 8220400]

約数ペア:

[(1, 8220400), (2, 4110200), (4, 2055100), (5, 1644080), (8, 1027550), (10, 822040), (16, 513775), (20, 411020), (25, 328816), (40, 205510), (50, 164408), (80, 102755), (100, 82204), (200, 41102), (400, 20551)]