18743823

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2237}}^1$

素因数の和:2276

約数の個数: 36

約数和(自身を含む): 33167160

約数和(自身を除く): 14423337

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2237, 2793, 6711, 8379, 15659, 20133, 42503, 46977, 109613, 127509, 140931, 297521, 328839, 382527, 892563, 986517, 2082647, 2677689, 6247941, 18743823]

約数ペア:

[(1, 18743823), (3, 6247941), (7, 2677689), (9, 2082647), (19, 986517), (21, 892563), (49, 382527), (57, 328839), (63, 297521), (133, 140931), (147, 127509), (171, 109613), (399, 46977), (441, 42503), (931, 20133), (1197, 15659), (2237, 8379), (2793, 6711)]