21245185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{461}}^1\times {\mathrm{709}}^1$

素因数の和:1188

約数の個数: 16

約数和(自身を含む): 27553680

約数和(自身を除く): 6308495

約数列:

[1, 5, 13, 65, 461, 709, 2305, 3545, 5993, 9217, 29965, 46085, 326849, 1634245, 4249037, 21245185]

約数ペア:

[(1, 21245185), (5, 4249037), (13, 1634245), (65, 326849), (461, 46085), (709, 29965), (2305, 9217), (3545, 5993)]