21009776

素因数分解:

$2^4\times {\mathrm{631}}^1\times {\mathrm{2081}}^1$

素因数の和:2720

約数の個数: 20

約数和(自身を含む): 40790544

約数和(自身を除く): 19780768

約数列:

[1, 2, 4, 8, 16, 631, 1262, 2081, 2524, 4162, 5048, 8324, 10096, 16648, 33296, 1313111, 2626222, 5252444, 10504888, 21009776]

約数ペア:

[(1, 21009776), (2, 10504888), (4, 5252444), (8, 2626222), (16, 1313111), (631, 33296), (1262, 16648), (2081, 10096), (2524, 8324), (4162, 5048)]