19710512

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{28649}}^1$

素因数の和:28700

約数の個数: 20

約数和(自身を含む): 39078600

約数和(自身を除く): 19368088

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 28649, 57298, 114596, 229192, 458384, 1231907, 2463814, 4927628, 9855256, 19710512]

約数ペア:

[(1, 19710512), (2, 9855256), (4, 4927628), (8, 2463814), (16, 1231907), (43, 458384), (86, 229192), (172, 114596), (344, 57298), (688, 28649)]