20279181

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{419}}^1$

素因数の和:525

約数の個数: 32

約数和(自身を含む): 31328640

約数和(自身を除く): 11049459

約数列:

[1, 3, 13, 17, 39, 51, 73, 219, 221, 419, 663, 949, 1241, 1257, 2847, 3723, 5447, 7123, 16133, 16341, 21369, 30587, 48399, 91761, 92599, 277797, 397631, 519979, 1192893, 1559937, 6759727, 20279181]

約数ペア:

[(1, 20279181), (3, 6759727), (13, 1559937), (17, 1192893), (39, 519979), (51, 397631), (73, 277797), (219, 92599), (221, 91761), (419, 48399), (663, 30587), (949, 21369), (1241, 16341), (1257, 16133), (2847, 7123), (3723, 5447)]