19738971

素因数分解:

$3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1123}}^1$

素因数の和:1173

約数の個数: 40

約数和(自身を含む): 34817024

約数和(自身を除く): 15078053

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 81, 93, 189, 217, 279, 567, 651, 837, 1123, 1953, 2511, 3369, 5859, 7861, 10107, 17577, 23583, 30321, 34813, 70749, 90963, 104439, 212247, 243691, 313317, 636741, 731073, 939951, 2193219, 2819853, 6579657, 19738971]

約数ペア:

[(1, 19738971), (3, 6579657), (7, 2819853), (9, 2193219), (21, 939951), (27, 731073), (31, 636741), (63, 313317), (81, 243691), (93, 212247), (189, 104439), (217, 90963), (279, 70749), (567, 34813), (651, 30321), (837, 23583), (1123, 17577), (1953, 10107), (2511, 7861), (3369, 5859)]