640544254

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{15881}}^1$

素因数の和:16000

約数の個数: 32

約数和(自身を含む): 1140454656

約数和(自身を除く): 499910402

約数列:

[1, 2, 7, 14, 43, 67, 86, 134, 301, 469, 602, 938, 2881, 5762, 15881, 20167, 31762, 40334, 111167, 222334, 682883, 1064027, 1365766, 2128054, 4780181, 7448189, 9560362, 14896378, 45753161, 91506322, 320272127, 640544254]

約数ペア:

[(1, 640544254), (2, 320272127), (7, 91506322), (14, 45753161), (43, 14896378), (67, 9560362), (86, 7448189), (134, 4780181), (301, 2128054), (469, 1365766), (602, 1064027), (938, 682883), (2881, 222334), (5762, 111167), (15881, 40334), (20167, 31762)]