21908341

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{211}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 27744864

約数和(自身を除く): 5836523

約数列:

[1, 7, 13, 49, 91, 163, 211, 637, 1141, 1477, 2119, 2743, 7987, 10339, 14833, 19201, 34393, 103831, 134407, 240751, 447109, 1685257, 3129763, 21908341]

約数ペア:

[(1, 21908341), (7, 3129763), (13, 1685257), (49, 447109), (91, 240751), (163, 134407), (211, 103831), (637, 34393), (1141, 19201), (1477, 14833), (2119, 10339), (2743, 7987)]