21830809

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{193}}^1$

素因数の和:337

約数の個数: 32

約数和(自身を含む): 29723904

約数和(自身を除く): 7893095

約数列:

[1, 7, 11, 13, 77, 91, 113, 143, 193, 791, 1001, 1243, 1351, 1469, 2123, 2509, 8701, 10283, 14861, 16159, 17563, 21809, 27599, 113113, 152663, 193193, 239899, 283517, 1679293, 1984619, 3118687, 21830809]

約数ペア:

[(1, 21830809), (7, 3118687), (11, 1984619), (13, 1679293), (77, 283517), (91, 239899), (113, 193193), (143, 152663), (193, 113113), (791, 27599), (1001, 21809), (1243, 17563), (1351, 16159), (1469, 14861), (2123, 10283), (2509, 8701)]