20550860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{857}}^1$

素因数の和:986

約数の個数: 48

約数和(自身を含む): 47567520

約数和(自身を除く): 27016660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 857, 1090, 1199, 1714, 2180, 2398, 3428, 4285, 4796, 5995, 8570, 9427, 11990, 17140, 18854, 23980, 37708, 47135, 93413, 94270, 186826, 188540, 373652, 467065, 934130, 1027543, 1868260, 2055086, 4110172, 5137715, 10275430, 20550860]

約数ペア:

[(1, 20550860), (2, 10275430), (4, 5137715), (5, 4110172), (10, 2055086), (11, 1868260), (20, 1027543), (22, 934130), (44, 467065), (55, 373652), (109, 188540), (110, 186826), (218, 94270), (220, 93413), (436, 47135), (545, 37708), (857, 23980), (1090, 18854), (1199, 17140), (1714, 11990), (2180, 9427), (2398, 8570), (3428, 5995), (4285, 4796)]