21026761

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2141}}^1$

素因数の和:2232

約数の個数: 16

約数和(自身を含む): 25498368

約数和(自身を除く): 4471607

約数列:

[1, 7, 23, 61, 161, 427, 1403, 2141, 9821, 14987, 49243, 130601, 344701, 914207, 3003823, 21026761]

約数ペア:

[(1, 21026761), (7, 3003823), (23, 914207), (61, 344701), (161, 130601), (427, 49243), (1403, 14987), (2141, 9821)]