21415724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{486721}}^1$

素因数の和:486736

約数の個数: 12

約数和(自身を含む): 40884648

約数和(自身を除く): 19468924

約数列:

[1, 2, 4, 11, 22, 44, 486721, 973442, 1946884, 5353931, 10707862, 21415724]

約数ペア:

[(1, 21415724), (2, 10707862), (4, 5353931), (11, 1946884), (22, 973442), (44, 486721)]