19813959

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 33774624

約数和(自身を除く): 13960665

約数列:

[1, 3, 9, 11, 17, 33, 51, 61, 99, 153, 183, 187, 193, 549, 561, 579, 671, 1037, 1683, 1737, 2013, 2123, 3111, 3281, 6039, 6369, 9333, 9843, 11407, 11773, 19107, 29529, 34221, 35319, 36091, 102663, 105957, 108273, 129503, 200141, 324819, 388509, 600423, 1165527, 1801269, 2201551, 6604653, 19813959]

約数ペア:

[(1, 19813959), (3, 6604653), (9, 2201551), (11, 1801269), (17, 1165527), (33, 600423), (51, 388509), (61, 324819), (99, 200141), (153, 129503), (183, 108273), (187, 105957), (193, 102663), (549, 36091), (561, 35319), (579, 34221), (671, 29529), (1037, 19107), (1683, 11773), (1737, 11407), (2013, 9843), (2123, 9333), (3111, 6369), (3281, 6039)]