19969719

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 34728960

約数和(自身を除く): 14759241

約数列:

[1, 3, 7, 11, 21, 29, 33, 77, 87, 121, 203, 231, 271, 319, 363, 609, 813, 847, 957, 1897, 2233, 2541, 2981, 3509, 5691, 6699, 7859, 8943, 10527, 20867, 23577, 24563, 32791, 55013, 62601, 73689, 86449, 98373, 165039, 229537, 259347, 605143, 688611, 950939, 1815429, 2852817, 6656573, 19969719]

約数ペア:

[(1, 19969719), (3, 6656573), (7, 2852817), (11, 1815429), (21, 950939), (29, 688611), (33, 605143), (77, 259347), (87, 229537), (121, 165039), (203, 98373), (231, 86449), (271, 73689), (319, 62601), (363, 55013), (609, 32791), (813, 24563), (847, 23577), (957, 20867), (1897, 10527), (2233, 8943), (2541, 7859), (2981, 6699), (3509, 5691)]