21937136

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{105467}}^1$

素因数の和:105488

約数の個数: 20

約数和(自身を含む): 45773112

約数和(自身を除く): 23835976

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 105467, 210934, 421868, 843736, 1371071, 1687472, 2742142, 5484284, 10968568, 21937136]

約数ペア:

[(1, 21937136), (2, 10968568), (4, 5484284), (8, 2742142), (13, 1687472), (16, 1371071), (26, 843736), (52, 421868), (104, 210934), (208, 105467)]