20454028

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{10903}}^1$

素因数の和:10981

約数の個数: 24

約数和(自身を含む): 41522432

約数和(自身を除く): 21068404

約数列:

[1, 2, 4, 7, 14, 28, 67, 134, 268, 469, 938, 1876, 10903, 21806, 43612, 76321, 152642, 305284, 730501, 1461002, 2922004, 5113507, 10227014, 20454028]

約数ペア:

[(1, 20454028), (2, 10227014), (4, 5113507), (7, 2922004), (14, 1461002), (28, 730501), (67, 305284), (134, 152642), (268, 76321), (469, 43612), (938, 21806), (1876, 10903)]