19639988

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{1063}}^1$

素因数の和:1247

約数の個数: 24

約数和(自身を含む): 35750400

約数和(自身を除く): 16110412

約数列:

[1, 2, 4, 31, 62, 124, 149, 298, 596, 1063, 2126, 4252, 4619, 9238, 18476, 32953, 65906, 131812, 158387, 316774, 633548, 4909997, 9819994, 19639988]

約数ペア:

[(1, 19639988), (2, 9819994), (4, 4909997), (31, 633548), (62, 316774), (124, 158387), (149, 131812), (298, 65906), (596, 32953), (1063, 18476), (2126, 9238), (4252, 4619)]