19904038

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{421}}^1$

素因数の和:748

約数の個数: 32

約数和(自身を含む): 37433088

約数和(自身を除く): 17529050

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 307, 421, 614, 842, 2149, 2947, 3377, 4298, 4631, 5894, 6754, 9262, 23639, 32417, 47278, 64834, 129247, 258494, 904729, 1421717, 1809458, 2843434, 9952019, 19904038]

約数ペア:

[(1, 19904038), (2, 9952019), (7, 2843434), (11, 1809458), (14, 1421717), (22, 904729), (77, 258494), (154, 129247), (307, 64834), (421, 47278), (614, 32417), (842, 23639), (2149, 9262), (2947, 6754), (3377, 5894), (4298, 4631)]