20601218

素因数分解:

$2^1\times {\mathrm{11}}^3\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 34784640

約数和(自身を除く): 14183422

約数列:

[1, 2, 11, 22, 71, 109, 121, 142, 218, 242, 781, 1199, 1331, 1562, 2398, 2662, 7739, 8591, 13189, 15478, 17182, 26378, 85129, 94501, 145079, 170258, 189002, 290158, 936419, 1872838, 10300609, 20601218]

約数ペア:

[(1, 20601218), (2, 10300609), (11, 1872838), (22, 936419), (71, 290158), (109, 189002), (121, 170258), (142, 145079), (218, 94501), (242, 85129), (781, 26378), (1199, 17182), (1331, 15478), (1562, 13189), (2398, 8591), (2662, 7739)]