20467881

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{659}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 16597719

約数列:

[1, 3, 7, 9, 17, 21, 29, 51, 63, 87, 119, 153, 203, 261, 357, 493, 609, 659, 1071, 1479, 1827, 1977, 3451, 4437, 4613, 5931, 10353, 11203, 13839, 19111, 31059, 33609, 41517, 57333, 78421, 100827, 133777, 171999, 235263, 324887, 401331, 705789, 974661, 1203993, 2274209, 2923983, 6822627, 20467881]

約数ペア:

[(1, 20467881), (3, 6822627), (7, 2923983), (9, 2274209), (17, 1203993), (21, 974661), (29, 705789), (51, 401331), (63, 324887), (87, 235263), (119, 171999), (153, 133777), (203, 100827), (261, 78421), (357, 57333), (493, 41517), (609, 33609), (659, 31059), (1071, 19111), (1479, 13839), (1827, 11203), (1977, 10353), (3451, 5931), (4437, 4613)]