19868121

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1427}}^1$

素因数の和:1470

約数の個数: 48

約数和(自身を含む): 37425024

約数和(自身を除く): 17556903

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 117, 119, 153, 221, 273, 357, 663, 819, 1071, 1427, 1547, 1989, 4281, 4641, 9989, 12843, 13923, 18551, 24259, 29967, 55653, 72777, 89901, 129857, 166959, 169813, 218331, 315367, 389571, 509439, 946101, 1168713, 1528317, 2207569, 2838303, 6622707, 19868121]

約数ペア:

[(1, 19868121), (3, 6622707), (7, 2838303), (9, 2207569), (13, 1528317), (17, 1168713), (21, 946101), (39, 509439), (51, 389571), (63, 315367), (91, 218331), (117, 169813), (119, 166959), (153, 129857), (221, 89901), (273, 72777), (357, 55653), (663, 29967), (819, 24259), (1071, 18551), (1427, 13923), (1547, 12843), (1989, 9989), (4281, 4641)]