19654397

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 25546752

約数和(自身を除く): 5892355

約数列:

[1, 7, 17, 23, 43, 119, 161, 167, 301, 391, 731, 989, 1169, 2737, 2839, 3841, 5117, 6923, 7181, 16813, 19873, 26887, 50267, 65297, 117691, 122077, 165163, 457079, 854539, 1156141, 2807771, 19654397]

約数ペア:

[(1, 19654397), (7, 2807771), (17, 1156141), (23, 854539), (43, 457079), (119, 165163), (161, 122077), (167, 117691), (301, 65297), (391, 50267), (731, 26887), (989, 19873), (1169, 16813), (2737, 7181), (2839, 6923), (3841, 5117)]