21905067

素因数分解:

$3^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1\times {\mathrm{239}}^1$

素因数の和:602

約数の個数: 16

約数和(自身を含む): 29675520

約数和(自身を除く): 7770453

約数列:

[1, 3, 137, 223, 239, 411, 669, 717, 30551, 32743, 53297, 91653, 98229, 159891, 7301689, 21905067]

約数ペア:

[(1, 21905067), (3, 7301689), (137, 159891), (223, 98229), (239, 91653), (411, 53297), (669, 32743), (717, 30551)]