18879651

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1381}}^1$

素因数の和:1432

約数の個数: 36

約数和(自身を含む): 32769984

約数和(自身を除く): 13890333

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 651, 1381, 1519, 1953, 4143, 4557, 9667, 12429, 13671, 29001, 42811, 67669, 87003, 128433, 203007, 299677, 385299, 609021, 899031, 2097739, 2697093, 6293217, 18879651]

約数ペア:

[(1, 18879651), (3, 6293217), (7, 2697093), (9, 2097739), (21, 899031), (31, 609021), (49, 385299), (63, 299677), (93, 203007), (147, 128433), (217, 87003), (279, 67669), (441, 42811), (651, 29001), (1381, 13671), (1519, 12429), (1953, 9667), (4143, 4557)]