21084947

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:263

約数の個数: 24

約数和(自身を含む): 24902640

約数和(自身を除く): 3817693

約数列:

[1, 13, 17, 41, 169, 179, 221, 533, 697, 2327, 2873, 3043, 6929, 7339, 9061, 30251, 39559, 95407, 117793, 124763, 514267, 1240291, 1621919, 21084947]

約数ペア:

[(1, 21084947), (13, 1621919), (17, 1240291), (41, 514267), (169, 124763), (179, 117793), (221, 95407), (533, 39559), (697, 30251), (2327, 9061), (2873, 7339), (3043, 6929)]