20807726836

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{179}}^1\times {\mathrm{2819}}^1$

素因数の和:3089

約数の個数: 72

約数和(自身を含む): 40314607200

約数和(自身を除く): 19506880364

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 169, 179, 244, 338, 358, 676, 716, 793, 1586, 2327, 2819, 3172, 4654, 5638, 9308, 10309, 10919, 11276, 20618, 21838, 30251, 36647, 41236, 43676, 60502, 73294, 121004, 141947, 146588, 171959, 283894, 343918, 476411, 504601, 567788, 687836, 952822, 1009202, 1845311, 1905644, 2018404, 2235467, 3690622, 4470934, 6559813, 7381244, 8941868, 13119626, 26239252, 29061071, 30780661, 58122142, 61561322, 85277569, 116244284, 123122644, 170555138, 341110276, 400148593, 800297186, 1600594372, 5201931709, 10403863418, 20807726836]

約数ペア:

[(1, 20807726836), (2, 10403863418), (4, 5201931709), (13, 1600594372), (26, 800297186), (52, 400148593), (61, 341110276), (122, 170555138), (169, 123122644), (179, 116244284), (244, 85277569), (338, 61561322), (358, 58122142), (676, 30780661), (716, 29061071), (793, 26239252), (1586, 13119626), (2327, 8941868), (2819, 7381244), (3172, 6559813), (4654, 4470934), (5638, 3690622), (9308, 2235467), (10309, 2018404), (10919, 1905644), (11276, 1845311), (20618, 1009202), (21838, 952822), (30251, 687836), (36647, 567788), (41236, 504601), (43676, 476411), (60502, 343918), (73294, 283894), (121004, 171959), (141947, 146588)]