20669467

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:499

約数の個数: 32

約数和(自身を含む): 27869184

約数和(自身を除く): 7199717

約数列:

[1, 7, 13, 17, 31, 91, 119, 217, 221, 403, 431, 527, 1547, 2821, 3017, 3689, 5603, 6851, 7327, 13361, 39221, 47957, 51289, 93527, 95251, 173693, 227137, 666757, 1215851, 1589959, 2952781, 20669467]

約数ペア:

[(1, 20669467), (7, 2952781), (13, 1589959), (17, 1215851), (31, 666757), (91, 227137), (119, 173693), (217, 95251), (221, 93527), (403, 51289), (431, 47957), (527, 39221), (1547, 13361), (2821, 7327), (3017, 6851), (3689, 5603)]