19968039

素因数分解:

$3^6\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1$

素因数の和:88

約数の個数: 84

約数和(自身を含む): 38377416

約数和(自身を除く): 18409377

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 43, 49, 63, 81, 91, 117, 129, 147, 189, 243, 273, 301, 351, 387, 441, 559, 567, 637, 729, 819, 903, 1053, 1161, 1323, 1677, 1701, 1911, 2107, 2457, 2709, 3159, 3483, 3913, 3969, 5031, 5103, 5733, 6321, 7371, 8127, 9477, 10449, 11739, 11907, 15093, 17199, 18963, 22113, 24381, 27391, 31347, 35217, 35721, 45279, 51597, 56889, 66339, 73143, 82173, 105651, 135837, 154791, 170667, 219429, 246519, 316953, 407511, 464373, 512001, 739557, 950859, 1536003, 2218671, 2852577, 6656013, 19968039]

約数ペア:

[(1, 19968039), (3, 6656013), (7, 2852577), (9, 2218671), (13, 1536003), (21, 950859), (27, 739557), (39, 512001), (43, 464373), (49, 407511), (63, 316953), (81, 246519), (91, 219429), (117, 170667), (129, 154791), (147, 135837), (189, 105651), (243, 82173), (273, 73143), (301, 66339), (351, 56889), (387, 51597), (441, 45279), (559, 35721), (567, 35217), (637, 31347), (729, 27391), (819, 24381), (903, 22113), (1053, 18963), (1161, 17199), (1323, 15093), (1677, 11907), (1701, 11739), (1911, 10449), (2107, 9477), (2457, 8127), (2709, 7371), (3159, 6321), (3483, 5733), (3913, 5103), (3969, 5031)]