20021157

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{811}}^1$

素因数の和:1041

約数の個数: 24

約数和(自身を含む): 31330208

約数和(自身を除く): 11309051

約数列:

[1, 3, 9, 13, 39, 117, 211, 633, 811, 1899, 2433, 2743, 7299, 8229, 10543, 24687, 31629, 94887, 171121, 513363, 1540089, 2224573, 6673719, 20021157]

約数ペア:

[(1, 20021157), (3, 6673719), (9, 2224573), (13, 1540089), (39, 513363), (117, 171121), (211, 94887), (633, 31629), (811, 24687), (1899, 10543), (2433, 8229), (2743, 7299)]