21289072

素因数分解:

$2^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1451}}^1$

素因数の和:1597

約数の個数: 40

約数和(自身を含む): 47532672

約数和(自身を除く): 26243600

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 131, 262, 524, 917, 1048, 1451, 1834, 2096, 2902, 3668, 5804, 7336, 10157, 11608, 14672, 20314, 23216, 40628, 81256, 162512, 190081, 380162, 760324, 1330567, 1520648, 2661134, 3041296, 5322268, 10644536, 21289072]

約数ペア:

[(1, 21289072), (2, 10644536), (4, 5322268), (7, 3041296), (8, 2661134), (14, 1520648), (16, 1330567), (28, 760324), (56, 380162), (112, 190081), (131, 162512), (262, 81256), (524, 40628), (917, 23216), (1048, 20314), (1451, 14672), (1834, 11608), (2096, 10157), (2902, 7336), (3668, 5804)]