21095668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^2$

素因数の和:264

約数の個数: 36

約数和(自身を含む): 41541696

約数和(自身を除く): 20446028

約数列:

[1, 2, 4, 11, 22, 44, 47, 94, 101, 188, 202, 404, 517, 1034, 1111, 2068, 2222, 4444, 4747, 9494, 10201, 18988, 20402, 40804, 52217, 104434, 112211, 208868, 224422, 448844, 479447, 958894, 1917788, 5273917, 10547834, 21095668]

約数ペア:

[(1, 21095668), (2, 10547834), (4, 5273917), (11, 1917788), (22, 958894), (44, 479447), (47, 448844), (94, 224422), (101, 208868), (188, 112211), (202, 104434), (404, 52217), (517, 40804), (1034, 20402), (1111, 18988), (2068, 10201), (2222, 9494), (4444, 4747)]