19705378

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{643}}^1$

素因数の和:862

約数の個数: 32

約数和(自身を含む): 37094400

約数和(自身を除く): 17389022

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 199, 398, 643, 1286, 1393, 2189, 2786, 4378, 4501, 7073, 9002, 14146, 15323, 30646, 49511, 99022, 127957, 255914, 895699, 1407527, 1791398, 2815054, 9852689, 19705378]

約数ペア:

[(1, 19705378), (2, 9852689), (7, 2815054), (11, 1791398), (14, 1407527), (22, 895699), (77, 255914), (154, 127957), (199, 99022), (398, 49511), (643, 30646), (1286, 15323), (1393, 14146), (2189, 9002), (2786, 7073), (4378, 4501)]