21280806

素因数分解:

$2^1\times 3^4\times {\mathrm{131363}}^1$

素因数の和:131377

約数の個数: 20

約数和(自身を含む): 47685132

約数和(自身を除く): 26404326

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 131363, 262726, 394089, 788178, 1182267, 2364534, 3546801, 7093602, 10640403, 21280806]

約数ペア:

[(1, 21280806), (2, 10640403), (3, 7093602), (6, 3546801), (9, 2364534), (18, 1182267), (27, 788178), (54, 394089), (81, 262726), (162, 131363)]