20787481

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{503}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 25994304

約数和(自身を除く): 5206823

約数列:

[1, 11, 13, 17, 143, 187, 221, 289, 503, 2431, 3179, 3757, 5533, 6539, 8551, 41327, 71929, 94061, 111163, 145367, 1222793, 1599037, 1889771, 20787481]

約数ペア:

[(1, 20787481), (11, 1889771), (13, 1599037), (17, 1222793), (143, 145367), (187, 111163), (221, 94061), (289, 71929), (503, 41327), (2431, 8551), (3179, 6539), (3757, 5533)]