20780511

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{1231}}^1$

素因数の和:1582

約数の個数: 16

約数和(自身を含む): 29449728

約数和(自身を除く): 8669217

約数列:

[1, 3, 17, 51, 331, 993, 1231, 3693, 5627, 16881, 20927, 62781, 407461, 1222383, 6926837, 20780511]

約数ペア:

[(1, 20780511), (3, 6926837), (17, 1222383), (51, 407461), (331, 62781), (993, 20927), (1231, 16881), (3693, 5627)]