21761831

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{269}}^1$

素因数の和:423

約数の個数: 24

約数和(自身を含む): 27578880

約数和(自身を除く): 5817049

約数列:

[1, 7, 13, 49, 91, 127, 269, 637, 889, 1651, 1883, 3497, 6223, 11557, 13181, 24479, 34163, 80899, 171353, 239141, 444119, 1673987, 3108833, 21761831]

約数ペア:

[(1, 21761831), (7, 3108833), (13, 1673987), (49, 444119), (91, 239141), (127, 171353), (269, 80899), (637, 34163), (889, 24479), (1651, 13181), (1883, 11557), (3497, 6223)]