21742660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63949}}^1$

素因数の和:63975

約数の個数: 24

約数和(自身を含む): 48346200

約数和(自身を除く): 26603540

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63949, 127898, 255796, 319745, 639490, 1087133, 1278980, 2174266, 4348532, 5435665, 10871330, 21742660]

約数ペア:

[(1, 21742660), (2, 10871330), (4, 5435665), (5, 4348532), (10, 2174266), (17, 1278980), (20, 1087133), (34, 639490), (68, 319745), (85, 255796), (170, 127898), (340, 63949)]