20821498

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{8389}}^1$

素因数の和:8481

約数の個数: 16

約数和(自身を含む): 33526440

約数和(自身を除く): 12704942

約数列:

[1, 2, 17, 34, 73, 146, 1241, 2482, 8389, 16778, 142613, 285226, 612397, 1224794, 10410749, 20821498]

約数ペア:

[(1, 20821498), (2, 10410749), (17, 1224794), (34, 612397), (73, 285226), (146, 142613), (1241, 16778), (2482, 8389)]