20666538

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 46141056

約数和(自身を除く): 25474518

約数列:

[1, 2, 3, 6, 9, 18, 71, 103, 142, 157, 206, 213, 309, 314, 426, 471, 618, 639, 927, 942, 1278, 1413, 1854, 2826, 7313, 11147, 14626, 16171, 21939, 22294, 32342, 33441, 43878, 48513, 65817, 66882, 97026, 100323, 131634, 145539, 200646, 291078, 1148141, 2296282, 3444423, 6888846, 10333269, 20666538]

約数ペア:

[(1, 20666538), (2, 10333269), (3, 6888846), (6, 3444423), (9, 2296282), (18, 1148141), (71, 291078), (103, 200646), (142, 145539), (157, 131634), (206, 100323), (213, 97026), (309, 66882), (314, 65817), (426, 48513), (471, 43878), (618, 33441), (639, 32342), (927, 22294), (942, 21939), (1278, 16171), (1413, 14626), (1854, 11147), (2826, 7313)]