12789800

素因数分解:

$2^3\times 5^2\times {\mathrm{63949}}^1$

素因数の和:63965

約数の個数: 24

約数和(自身を含む): 29736750

約数和(自身を除く): 16946950

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 63949, 127898, 255796, 319745, 511592, 639490, 1278980, 1598725, 2557960, 3197450, 6394900, 12789800]

約数ペア:

[(1, 12789800), (2, 6394900), (4, 3197450), (5, 2557960), (8, 1598725), (10, 1278980), (20, 639490), (25, 511592), (40, 319745), (50, 255796), (100, 127898), (200, 63949)]