20348840

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2411}}^1$

素因数の和:2633

約数の個数: 32

約数和(自身を含む): 46020960

約数和(自身を除く): 25672120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2411, 4220, 4822, 8440, 9644, 12055, 19288, 24110, 48220, 96440, 508721, 1017442, 2034884, 2543605, 4069768, 5087210, 10174420, 20348840]

約数ペア:

[(1, 20348840), (2, 10174420), (4, 5087210), (5, 4069768), (8, 2543605), (10, 2034884), (20, 1017442), (40, 508721), (211, 96440), (422, 48220), (844, 24110), (1055, 19288), (1688, 12055), (2110, 9644), (2411, 8440), (4220, 4822)]