19900457

素因数分解:

${\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:284

約数の個数: 16

約数和(自身を含む): 21196560

約数和(自身を除く): 1296103

約数列:

[1, 41, 61, 73, 109, 2501, 2993, 4453, 4469, 6649, 7957, 182573, 272609, 326237, 485377, 19900457]

約数ペア:

[(1, 19900457), (41, 485377), (61, 326237), (73, 272609), (109, 182573), (2501, 7957), (2993, 6649), (4453, 4469)]