20887863

素因数分解:

$3^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1\times {\mathrm{563}}^1$

素因数の和:798

約数の個数: 16

約数和(自身を含む): 28425600

約数和(自身を除く): 7537737

約数列:

[1, 3, 83, 149, 249, 447, 563, 1689, 12367, 37101, 46729, 83887, 140187, 251661, 6962621, 20887863]

約数ペア:

[(1, 20887863), (3, 6962621), (83, 251661), (149, 140187), (249, 83887), (447, 46729), (563, 37101), (1689, 12367)]