21087365

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{739}}^1$

素因数の和:1196

約数の個数: 16

約数和(自身を含む): 27350400

約数和(自身を除く): 6263035

約数列:

[1, 5, 13, 65, 439, 739, 2195, 3695, 5707, 9607, 28535, 48035, 324421, 1622105, 4217473, 21087365]

約数ペア:

[(1, 21087365), (5, 4217473), (13, 1622105), (65, 324421), (439, 48035), (739, 28535), (2195, 9607), (3695, 5707)]