21398600

素因数分解:

$2^3\times 5^2\times {\mathrm{106993}}^1$

素因数の和:107009

約数の個数: 24

約数和(自身を含む): 49752210

約数和(自身を除く): 28353610

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 106993, 213986, 427972, 534965, 855944, 1069930, 2139860, 2674825, 4279720, 5349650, 10699300, 21398600]

約数ペア:

[(1, 21398600), (2, 10699300), (4, 5349650), (5, 4279720), (8, 2674825), (10, 2139860), (20, 1069930), (25, 855944), (40, 534965), (50, 427972), (100, 213986), (200, 106993)]