21557534

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1\times {\mathrm{571}}^1$

素因数の和:1055

約数の個数: 16

約数和(自身を含む): 33221760

約数和(自身を除く): 11664226

約数列:

[1, 2, 43, 86, 439, 571, 878, 1142, 18877, 24553, 37754, 49106, 250669, 501338, 10778767, 21557534]

約数ペア:

[(1, 21557534), (2, 10778767), (43, 501338), (86, 250669), (439, 49106), (571, 37754), (878, 24553), (1142, 18877)]