20018786977

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{1567}}^1\times {\mathrm{6359}}^1$

素因数の和:7981

約数の個数: 24

約数和(自身を含む): 23874117120

約数和(自身を除く): 3855330143

約数列:

[1, 7, 41, 49, 287, 1567, 2009, 6359, 10969, 44513, 64247, 76783, 260719, 311591, 449729, 1825033, 3148103, 9964553, 12775231, 69751871, 408546673, 488263097, 2859826711, 20018786977]

約数ペア:

[(1, 20018786977), (7, 2859826711), (41, 488263097), (49, 408546673), (287, 69751871), (1567, 12775231), (2009, 9964553), (6359, 3148103), (10969, 1825033), (44513, 449729), (64247, 311591), (76783, 260719)]