19973900

素因数分解:

$2^2\times 5^2\times {\mathrm{199739}}^1$

素因数の和:199753

約数の個数: 18

約数和(自身を含む): 43343580

約数和(自身を除く): 23369680

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 199739, 399478, 798956, 998695, 1997390, 3994780, 4993475, 9986950, 19973900]

約数ペア:

[(1, 19973900), (2, 9986950), (4, 4993475), (5, 3994780), (10, 1997390), (20, 998695), (25, 798956), (50, 399478), (100, 199739)]