20623911

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 37355520

約数和(自身を除く): 16731609

約数列:

[1, 3, 7, 11, 19, 21, 33, 37, 57, 77, 111, 127, 133, 209, 231, 259, 381, 399, 407, 627, 703, 777, 889, 1221, 1397, 1463, 2109, 2413, 2667, 2849, 4191, 4389, 4699, 4921, 7239, 7733, 8547, 9779, 14097, 14763, 16891, 23199, 26543, 29337, 32893, 50673, 51689, 54131, 79629, 89281, 98679, 155067, 162393, 185801, 267843, 361823, 557403, 624967, 982091, 1085469, 1874901, 2946273, 6874637, 20623911]

約数ペア:

[(1, 20623911), (3, 6874637), (7, 2946273), (11, 1874901), (19, 1085469), (21, 982091), (33, 624967), (37, 557403), (57, 361823), (77, 267843), (111, 185801), (127, 162393), (133, 155067), (209, 98679), (231, 89281), (259, 79629), (381, 54131), (399, 51689), (407, 50673), (627, 32893), (703, 29337), (777, 26543), (889, 23199), (1221, 16891), (1397, 14763), (1463, 14097), (2109, 9779), (2413, 8547), (2667, 7733), (2849, 7239), (4191, 4921), (4389, 4699)]