21105272

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{90971}}^1$

素因数の和:91006

約数の個数: 16

約数和(自身を含む): 40937400

約数和(自身を除く): 19832128

約数列:

[1, 2, 4, 8, 29, 58, 116, 232, 90971, 181942, 363884, 727768, 2638159, 5276318, 10552636, 21105272]

約数ペア:

[(1, 21105272), (2, 10552636), (4, 5276318), (8, 2638159), (29, 727768), (58, 363884), (116, 181942), (232, 90971)]