21294763

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:379

約数の個数: 24

約数和(自身を含む): 26470800

約数和(自身を除く): 5176037

約数列:

[1, 7, 19, 49, 89, 133, 257, 623, 931, 1691, 1799, 4361, 4883, 11837, 12593, 22873, 34181, 82859, 160111, 239267, 434587, 1120777, 3042109, 21294763]

約数ペア:

[(1, 21294763), (7, 3042109), (19, 1120777), (49, 434587), (89, 239267), (133, 160111), (257, 82859), (623, 34181), (931, 22873), (1691, 12593), (1799, 11837), (4361, 4883)]