20417397

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{523}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 36822528

約数和(自身を除く): 16405131

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 169, 231, 273, 429, 507, 523, 1001, 1183, 1569, 1859, 3003, 3549, 3661, 5577, 5753, 6799, 10983, 13013, 17259, 20397, 39039, 40271, 47593, 74789, 88387, 120813, 142779, 224367, 265161, 523523, 618709, 972257, 1570569, 1856127, 2916771, 6805799, 20417397]

約数ペア:

[(1, 20417397), (3, 6805799), (7, 2916771), (11, 1856127), (13, 1570569), (21, 972257), (33, 618709), (39, 523523), (77, 265161), (91, 224367), (143, 142779), (169, 120813), (231, 88387), (273, 74789), (429, 47593), (507, 40271), (523, 39039), (1001, 20397), (1183, 17259), (1569, 13013), (1859, 10983), (3003, 6799), (3549, 5753), (3661, 5577)]