21338277

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{3121}}^1$

素因数の和:3220

約数の個数: 16

約数和(自身を含む): 29671488

約数和(自身を除く): 8333211

約数列:

[1, 3, 43, 53, 129, 159, 2279, 3121, 6837, 9363, 134203, 165413, 402609, 496239, 7112759, 21338277]

約数ペア:

[(1, 21338277), (3, 7112759), (43, 496239), (53, 402609), (129, 165413), (159, 134203), (2279, 9363), (3121, 6837)]