21821427

素因数分解:

$3^3\times {\mathrm{29}}^2\times {\mathrm{31}}^2$

素因数の和:129

約数の個数: 36

約数和(自身を含む): 34596120

約数和(自身を除く): 12774693

約数列:

[1, 3, 9, 27, 29, 31, 87, 93, 261, 279, 783, 837, 841, 899, 961, 2523, 2697, 2883, 7569, 8091, 8649, 22707, 24273, 25947, 26071, 27869, 78213, 83607, 234639, 250821, 703917, 752463, 808201, 2424603, 7273809, 21821427]

約数ペア:

[(1, 21821427), (3, 7273809), (9, 2424603), (27, 808201), (29, 752463), (31, 703917), (87, 250821), (93, 234639), (261, 83607), (279, 78213), (783, 27869), (837, 26071), (841, 25947), (899, 24273), (961, 22707), (2523, 8649), (2697, 8091), (2883, 7569)]