21522416

素因数分解:

$2^4\times {\mathrm{431}}^1\times {\mathrm{3121}}^1$

素因数の和:3560

約数の個数: 20

約数和(自身を含む): 41809824

約数和(自身を除く): 20287408

約数列:

[1, 2, 4, 8, 16, 431, 862, 1724, 3121, 3448, 6242, 6896, 12484, 24968, 49936, 1345151, 2690302, 5380604, 10761208, 21522416]

約数ペア:

[(1, 21522416), (2, 10761208), (4, 5380604), (8, 2690302), (16, 1345151), (431, 49936), (862, 24968), (1724, 12484), (3121, 6896), (3448, 6242)]