19713213

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:315

約数の個数: 40

約数和(自身を含む): 32206328

約数和(自身を除く): 12493115

約数列:

[1, 3, 9, 13, 27, 39, 81, 97, 117, 193, 291, 351, 579, 873, 1053, 1261, 1737, 2509, 2619, 3783, 5211, 7527, 7857, 11349, 15633, 18721, 22581, 34047, 56163, 67743, 102141, 168489, 203229, 243373, 505467, 730119, 1516401, 2190357, 6571071, 19713213]

約数ペア:

[(1, 19713213), (3, 6571071), (9, 2190357), (13, 1516401), (27, 730119), (39, 505467), (81, 243373), (97, 203229), (117, 168489), (193, 102141), (291, 67743), (351, 56163), (579, 34047), (873, 22581), (1053, 18721), (1261, 15633), (1737, 11349), (2509, 7857), (2619, 7527), (3783, 5211)]