19896513

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2351}}^1$

素因数の和:2405

約数の個数: 32

約数和(自身を含む): 33718272

約数和(自身を除く): 13821759

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 217, 273, 403, 651, 1209, 2351, 2821, 7053, 8463, 16457, 30563, 49371, 72881, 91689, 213941, 218643, 510167, 641823, 947453, 1530501, 2842359, 6632171, 19896513]

約数ペア:

[(1, 19896513), (3, 6632171), (7, 2842359), (13, 1530501), (21, 947453), (31, 641823), (39, 510167), (91, 218643), (93, 213941), (217, 91689), (273, 72881), (403, 49371), (651, 30563), (1209, 16457), (2351, 8463), (2821, 7053)]