21241168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102121}}^1$

素因数の和:102142

約数の個数: 20

約数和(自身を含む): 44320948

約数和(自身を除く): 23079780

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102121, 204242, 408484, 816968, 1327573, 1633936, 2655146, 5310292, 10620584, 21241168]

約数ペア:

[(1, 21241168), (2, 10620584), (4, 5310292), (8, 2655146), (13, 1633936), (16, 1327573), (26, 816968), (52, 408484), (104, 204242), (208, 102121)]