21987658

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{2131}}^1$

素因数の和:2218

約数の個数: 32

約数和(自身を含む): 41753088

約数和(自身を除く): 19765430

約数列:

[1, 2, 7, 11, 14, 22, 67, 77, 134, 154, 469, 737, 938, 1474, 2131, 4262, 5159, 10318, 14917, 23441, 29834, 46882, 142777, 164087, 285554, 328174, 999439, 1570547, 1998878, 3141094, 10993829, 21987658]

約数ペア:

[(1, 21987658), (2, 10993829), (7, 3141094), (11, 1998878), (14, 1570547), (22, 999439), (67, 328174), (77, 285554), (134, 164087), (154, 142777), (469, 46882), (737, 29834), (938, 23441), (1474, 14917), (2131, 10318), (4262, 5159)]