21020780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{95549}}^1$

素因数の和:95569

約数の個数: 24

約数和(自身を含む): 48157200

約数和(自身を除く): 27136420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 95549, 191098, 382196, 477745, 955490, 1051039, 1910980, 2102078, 4204156, 5255195, 10510390, 21020780]

約数ペア:

[(1, 21020780), (2, 10510390), (4, 5255195), (5, 4204156), (10, 2102078), (11, 1910980), (20, 1051039), (22, 955490), (44, 477745), (55, 382196), (110, 191098), (220, 95549)]