21086770172

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{7043}}^1$

素因数の和:7219

約数の個数: 72

約数和(自身を含む): 41290913664

約数和(自身を除く): 20204143492

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 103, 169, 172, 206, 338, 412, 559, 676, 1118, 1339, 2236, 2678, 4429, 5356, 7043, 7267, 8858, 14086, 14534, 17407, 17716, 28172, 29068, 34814, 57577, 69628, 91559, 115154, 183118, 230308, 302849, 366236, 605698, 725429, 748501, 1190267, 1211396, 1450858, 1497002, 2380534, 2901716, 2994004, 3937037, 4761068, 7874074, 9430577, 15748148, 18861154, 31193447, 37722308, 51181481, 62386894, 102362962, 122597501, 124773788, 204725924, 245195002, 405514811, 490390004, 811029622, 1622059244, 5271692543, 10543385086, 21086770172]

約数ペア:

[(1, 21086770172), (2, 10543385086), (4, 5271692543), (13, 1622059244), (26, 811029622), (43, 490390004), (52, 405514811), (86, 245195002), (103, 204725924), (169, 124773788), (172, 122597501), (206, 102362962), (338, 62386894), (412, 51181481), (559, 37722308), (676, 31193447), (1118, 18861154), (1339, 15748148), (2236, 9430577), (2678, 7874074), (4429, 4761068), (5356, 3937037), (7043, 2994004), (7267, 2901716), (8858, 2380534), (14086, 1497002), (14534, 1450858), (17407, 1211396), (17716, 1190267), (28172, 748501), (29068, 725429), (34814, 605698), (57577, 366236), (69628, 302849), (91559, 230308), (115154, 183118)]