20487586

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{11003}}^1$

素因数の和:11038

約数の個数: 24

約数和(自身を含む): 37633680

約数和(自身を除く): 17146094

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862, 11003, 22006, 77021, 154042, 209057, 418114, 539147, 1078294, 1463399, 2926798, 10243793, 20487586]

約数ペア:

[(1, 20487586), (2, 10243793), (7, 2926798), (14, 1463399), (19, 1078294), (38, 539147), (49, 418114), (98, 209057), (133, 154042), (266, 77021), (931, 22006), (1862, 11003)]