21903469

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1373}}^1$

素因数の和:1476

約数の個数: 16

約数和(自身を含む): 26116992

約数和(自身を除く): 4213523

約数列:

[1, 7, 43, 53, 301, 371, 1373, 2279, 9611, 15953, 59039, 72769, 413273, 509383, 3129067, 21903469]

約数ペア:

[(1, 21903469), (7, 3129067), (43, 509383), (53, 413273), (301, 72769), (371, 59039), (1373, 15953), (2279, 9611)]