28290820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{34501}}^1$

素因数の和:34551

約数の個数: 24

約数和(自身を含む): 60861528

約数和(自身を除く): 32570708

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 34501, 69002, 138004, 172505, 345010, 690020, 1414541, 2829082, 5658164, 7072705, 14145410, 28290820]

約数ペア:

[(1, 28290820), (2, 14145410), (4, 7072705), (5, 5658164), (10, 2829082), (20, 1414541), (41, 690020), (82, 345010), (164, 172505), (205, 138004), (410, 69002), (820, 34501)]