20395089

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:119

約数の個数: 72

約数和(自身を含む): 36998208

約数和(自身を除く): 16603119

約数列:

[1, 3, 9, 11, 13, 23, 33, 39, 53, 69, 99, 117, 143, 159, 169, 207, 253, 299, 429, 477, 507, 583, 689, 759, 897, 1219, 1287, 1521, 1749, 1859, 2067, 2277, 2691, 3289, 3657, 3887, 5247, 5577, 6201, 7579, 8957, 9867, 10971, 11661, 13409, 15847, 16731, 22737, 26871, 29601, 34983, 40227, 42757, 47541, 68211, 80613, 98527, 120681, 128271, 142623, 174317, 206011, 295581, 384813, 522951, 618033, 886743, 1568853, 1854099, 2266121, 6798363, 20395089]

約数ペア:

[(1, 20395089), (3, 6798363), (9, 2266121), (11, 1854099), (13, 1568853), (23, 886743), (33, 618033), (39, 522951), (53, 384813), (69, 295581), (99, 206011), (117, 174317), (143, 142623), (159, 128271), (169, 120681), (207, 98527), (253, 80613), (299, 68211), (429, 47541), (477, 42757), (507, 40227), (583, 34983), (689, 29601), (759, 26871), (897, 22737), (1219, 16731), (1287, 15847), (1521, 13409), (1749, 11661), (1859, 10971), (2067, 9867), (2277, 8957), (2691, 7579), (3289, 6201), (3657, 5577), (3887, 5247)]