21504835

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{5507}}^1$

素因数の和:5594

約数の個数: 16

約数和(自身を含む): 28553472

約数和(自身を除く): 7048637

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 5507, 27535, 60577, 302885, 390997, 1954985, 4300967, 21504835]

約数ペア:

[(1, 21504835), (5, 4300967), (11, 1954985), (55, 390997), (71, 302885), (355, 60577), (781, 27535), (3905, 5507)]