20127987

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:193

約数の個数: 48

約数和(自身を含む): 33643680

約数和(自身を除く): 13515693

約数列:

[1, 3, 9, 11, 27, 33, 61, 99, 101, 121, 183, 297, 303, 363, 549, 671, 909, 1089, 1111, 1647, 2013, 2727, 3267, 3333, 6039, 6161, 7381, 9999, 12221, 18117, 18483, 22143, 29997, 36663, 55449, 66429, 67771, 109989, 166347, 199287, 203313, 329967, 609939, 745481, 1829817, 2236443, 6709329, 20127987]

約数ペア:

[(1, 20127987), (3, 6709329), (9, 2236443), (11, 1829817), (27, 745481), (33, 609939), (61, 329967), (99, 203313), (101, 199287), (121, 166347), (183, 109989), (297, 67771), (303, 66429), (363, 55449), (549, 36663), (671, 29997), (909, 22143), (1089, 18483), (1111, 18117), (1647, 12221), (2013, 9999), (2727, 7381), (3267, 6161), (3333, 6039)]