21082431

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{2633}}^1$

素因数の和:2810

約数の個数: 16

約数和(自身を含む): 29964384

約数和(自身を除く): 8881953

約数列:

[1, 3, 17, 51, 157, 471, 2633, 2669, 7899, 8007, 44761, 134283, 413381, 1240143, 7027477, 21082431]

約数ペア:

[(1, 21082431), (3, 7027477), (17, 1240143), (51, 413381), (157, 134283), (471, 44761), (2633, 8007), (2669, 7899)]