21154307

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{293}}^1$

素因数の和:478

約数の個数: 16

約数和(自身を含む): 23369472

約数和(自身を除く): 2215165

約数列:

[1, 17, 31, 137, 293, 527, 2329, 4247, 4981, 9083, 40141, 72199, 154411, 682397, 1244371, 21154307]

約数ペア:

[(1, 21154307), (17, 1244371), (31, 682397), (137, 154411), (293, 72199), (527, 40141), (2329, 9083), (4247, 4981)]