19295991

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:117

約数の個数: 72

約数和(自身を含む): 34856640

約数和(自身を除く): 15560649

約数列:

[1, 3, 9, 11, 13, 29, 33, 39, 47, 87, 99, 117, 121, 141, 143, 261, 319, 363, 377, 423, 429, 517, 611, 957, 1089, 1131, 1287, 1363, 1551, 1573, 1833, 2871, 3393, 3509, 4089, 4147, 4653, 4719, 5499, 5687, 6721, 10527, 12267, 12441, 14157, 14993, 17061, 17719, 20163, 31581, 37323, 44979, 45617, 51183, 53157, 60489, 73931, 134937, 136851, 159471, 164923, 194909, 221793, 410553, 494769, 584727, 665379, 1484307, 1754181, 2143999, 6431997, 19295991]

約数ペア:

[(1, 19295991), (3, 6431997), (9, 2143999), (11, 1754181), (13, 1484307), (29, 665379), (33, 584727), (39, 494769), (47, 410553), (87, 221793), (99, 194909), (117, 164923), (121, 159471), (141, 136851), (143, 134937), (261, 73931), (319, 60489), (363, 53157), (377, 51183), (423, 45617), (429, 44979), (517, 37323), (611, 31581), (957, 20163), (1089, 17719), (1131, 17061), (1287, 14993), (1363, 14157), (1551, 12441), (1573, 12267), (1833, 10527), (2871, 6721), (3393, 5687), (3509, 5499), (4089, 4719), (4147, 4653)]