12920740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2251}}^1$

素因数の和:2308

約数の個数: 48

約数和(自身を含む): 31780224

約数和(自身を除く): 18859484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2251, 2870, 4502, 5740, 9004, 11255, 15757, 22510, 31514, 45020, 63028, 78785, 92291, 157570, 184582, 315140, 369164, 461455, 646037, 922910, 1292074, 1845820, 2584148, 3230185, 6460370, 12920740]

約数ペア:

[(1, 12920740), (2, 6460370), (4, 3230185), (5, 2584148), (7, 1845820), (10, 1292074), (14, 922910), (20, 646037), (28, 461455), (35, 369164), (41, 315140), (70, 184582), (82, 157570), (140, 92291), (164, 78785), (205, 63028), (287, 45020), (410, 31514), (574, 22510), (820, 15757), (1148, 11255), (1435, 9004), (2251, 5740), (2870, 4502)]