81421100

素因数分解:

$2^2\times 5^2\times {\mathrm{814211}}^1$

素因数の和:814225

約数の個数: 18

約数和(自身を含む): 176684004

約数和(自身を除く): 95262904

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 814211, 1628422, 3256844, 4071055, 8142110, 16284220, 20355275, 40710550, 81421100]

約数ペア:

[(1, 81421100), (2, 40710550), (4, 20355275), (5, 16284220), (10, 8142110), (20, 4071055), (25, 3256844), (50, 1628422), (100, 814211)]