21490232

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{65519}}^1$

素因数の和:65566

約数の個数: 16

約数和(自身を含む): 41277600

約数和(自身を除く): 19787368

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 65519, 131038, 262076, 524152, 2686279, 5372558, 10745116, 21490232]

約数ペア:

[(1, 21490232), (2, 10745116), (4, 5372558), (8, 2686279), (41, 524152), (82, 262076), (164, 131038), (328, 65519)]