28140147

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{2003}}^1$

素因数の和:2239

約数の個数: 24

約数和(自身を含む): 46685184

約数和(自身を除く): 18545037

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1561, 2003, 2007, 4683, 6009, 14021, 14049, 18027, 42063, 126189, 446669, 1340007, 3126683, 4020021, 9380049, 28140147]

約数ペア:

[(1, 28140147), (3, 9380049), (7, 4020021), (9, 3126683), (21, 1340007), (63, 446669), (223, 126189), (669, 42063), (1561, 18027), (2003, 14049), (2007, 14021), (4683, 6009)]