21548276

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{431}}^2$

素因数の和:895

約数の個数: 18

約数和(自身を含む): 39100530

約数和(自身を除く): 17552254

約数列:

[1, 2, 4, 29, 58, 116, 431, 862, 1724, 12499, 24998, 49996, 185761, 371522, 743044, 5387069, 10774138, 21548276]

約数ペア:

[(1, 21548276), (2, 10774138), (4, 5387069), (29, 743044), (58, 371522), (116, 185761), (431, 49996), (862, 24998), (1724, 12499)]