20080131

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{2333}}^1$

素因数の和:2506

約数の個数: 16

約数和(自身を含む): 28381440

約数和(自身を除く): 8301309

約数列:

[1, 3, 19, 57, 151, 453, 2333, 2869, 6999, 8607, 44327, 132981, 352283, 1056849, 6693377, 20080131]

約数ペア:

[(1, 20080131), (3, 6693377), (19, 1056849), (57, 352283), (151, 132981), (453, 44327), (2333, 8607), (2869, 6999)]