21971584

素因数分解:

$2^7\times {\mathrm{171653}}^1$

素因数の和:171667

約数の個数: 16

約数和(自身を含む): 43771770

約数和(自身を除く): 21800186

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 171653, 343306, 686612, 1373224, 2746448, 5492896, 10985792, 21971584]

約数ペア:

[(1, 21971584), (2, 10985792), (4, 5492896), (8, 2746448), (16, 1373224), (32, 686612), (64, 343306), (128, 171653)]