12720879

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 20891520

約数和(自身を除く): 8170641

約数列:

[1, 3, 9, 17, 29, 47, 51, 61, 87, 141, 153, 183, 261, 423, 493, 549, 799, 1037, 1363, 1479, 1769, 2397, 2867, 3111, 4089, 4437, 5307, 7191, 8601, 9333, 12267, 15921, 23171, 25803, 30073, 48739, 69513, 83143, 90219, 146217, 208539, 249429, 270657, 438651, 748287, 1413431, 4240293, 12720879]

約数ペア:

[(1, 12720879), (3, 4240293), (9, 1413431), (17, 748287), (29, 438651), (47, 270657), (51, 249429), (61, 208539), (87, 146217), (141, 90219), (153, 83143), (183, 69513), (261, 48739), (423, 30073), (493, 25803), (549, 23171), (799, 15921), (1037, 12267), (1363, 9333), (1479, 8601), (1769, 7191), (2397, 5307), (2867, 4437), (3111, 4089)]