20720388

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{419}}^1$

素因数の和:756

約数の個数: 48

約数和(自身を含む): 52355520

約数和(自身を除く): 31635132

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 317, 419, 634, 838, 951, 1257, 1268, 1676, 1902, 2514, 3804, 4121, 5028, 5447, 8242, 10894, 12363, 16341, 16484, 21788, 24726, 32682, 49452, 65364, 132823, 265646, 398469, 531292, 796938, 1593876, 1726699, 3453398, 5180097, 6906796, 10360194, 20720388]

約数ペア:

[(1, 20720388), (2, 10360194), (3, 6906796), (4, 5180097), (6, 3453398), (12, 1726699), (13, 1593876), (26, 796938), (39, 531292), (52, 398469), (78, 265646), (156, 132823), (317, 65364), (419, 49452), (634, 32682), (838, 24726), (951, 21788), (1257, 16484), (1268, 16341), (1676, 12363), (1902, 10894), (2514, 8242), (3804, 5447), (4121, 5028)]