20810680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47297}}^1$

素因数の和:47319

約数の個数: 32

約数和(自身を含む): 51081840

約数和(自身を除く): 30271160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47297, 94594, 189188, 236485, 378376, 472970, 520267, 945940, 1040534, 1891880, 2081068, 2601335, 4162136, 5202670, 10405340, 20810680]

約数ペア:

[(1, 20810680), (2, 10405340), (4, 5202670), (5, 4162136), (8, 2601335), (10, 2081068), (11, 1891880), (20, 1040534), (22, 945940), (40, 520267), (44, 472970), (55, 378376), (88, 236485), (110, 189188), (220, 94594), (440, 47297)]