19840900

素因数分解:

$2^2\times 5^2\times {\mathrm{198409}}^1$

素因数の和:198423

約数の個数: 18

約数和(自身を含む): 43054970

約数和(自身を除く): 23214070

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 198409, 396818, 793636, 992045, 1984090, 3968180, 4960225, 9920450, 19840900]

約数ペア:

[(1, 19840900), (2, 9920450), (4, 4960225), (5, 3968180), (10, 1984090), (20, 992045), (25, 793636), (50, 396818), (100, 198409)]