21605398

素因数分解:

$2^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1\times {\mathrm{829}}^1$

素因数の和:1071

約数の個数: 16

約数和(自身を含む): 33047280

約数和(自身を除く): 11441882

約数列:

[1, 2, 83, 157, 166, 314, 829, 1658, 13031, 26062, 68807, 130153, 137614, 260306, 10802699, 21605398]

約数ペア:

[(1, 21605398), (2, 10802699), (83, 260306), (157, 137614), (166, 130153), (314, 68807), (829, 26062), (1658, 13031)]