21094928

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{7621}}^1$

素因数の和:7802

約数の個数: 20

約数和(自身を含む): 41113068

約数和(自身を除く): 20018140

約数列:

[1, 2, 4, 8, 16, 173, 346, 692, 1384, 2768, 7621, 15242, 30484, 60968, 121936, 1318433, 2636866, 5273732, 10547464, 21094928]

約数ペア:

[(1, 21094928), (2, 10547464), (4, 5273732), (8, 2636866), (16, 1318433), (173, 121936), (346, 60968), (692, 30484), (1384, 15242), (2768, 7621)]