20496500

素因数分解:

$2^2\times 5^3\times {\mathrm{40993}}^1$

素因数の和:41012

約数の個数: 24

約数和(自身を含む): 44765448

約数和(自身を除く): 24268948

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 40993, 81986, 163972, 204965, 409930, 819860, 1024825, 2049650, 4099300, 5124125, 10248250, 20496500]

約数ペア:

[(1, 20496500), (2, 10248250), (4, 5124125), (5, 4099300), (10, 2049650), (20, 1024825), (25, 819860), (50, 409930), (100, 204965), (125, 163972), (250, 81986), (500, 40993)]