21815344

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71761}}^1$

素因数の和:71788

約数の個数: 20

約数和(自身を含む): 44492440

約数和(自身を除く): 22677096

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71761, 143522, 287044, 574088, 1148176, 1363459, 2726918, 5453836, 10907672, 21815344]

約数ペア:

[(1, 21815344), (2, 10907672), (4, 5453836), (8, 2726918), (16, 1363459), (19, 1148176), (38, 574088), (76, 287044), (152, 143522), (304, 71761)]