20199456249

素因数分解:

$3^1\times 7^3\times {\mathrm{97}}^1\times {\mathrm{157}}^1\times {\mathrm{1289}}^1$

素因数の和:1567

約数の個数: 64

約数和(自身を含む): 31958976000

約数和(自身を除く): 11759519751

約数列:

[1, 3, 7, 21, 49, 97, 147, 157, 291, 343, 471, 679, 1029, 1099, 1289, 2037, 3297, 3867, 4753, 7693, 9023, 14259, 15229, 23079, 27069, 33271, 45687, 53851, 63161, 99813, 106603, 125033, 161553, 189483, 202373, 319809, 375099, 442127, 607119, 746221, 875231, 1326381, 1416611, 2238663, 2625693, 4249833, 5223547, 6126617, 9916277, 15670641, 18379851, 19630181, 29748831, 42886319, 58890543, 69413939, 128658957, 137411267, 208241817, 412233801, 961878869, 2885636607, 6733152083, 20199456249]

約数ペア:

[(1, 20199456249), (3, 6733152083), (7, 2885636607), (21, 961878869), (49, 412233801), (97, 208241817), (147, 137411267), (157, 128658957), (291, 69413939), (343, 58890543), (471, 42886319), (679, 29748831), (1029, 19630181), (1099, 18379851), (1289, 15670641), (2037, 9916277), (3297, 6126617), (3867, 5223547), (4753, 4249833), (7693, 2625693), (9023, 2238663), (14259, 1416611), (15229, 1326381), (23079, 875231), (27069, 746221), (33271, 607119), (45687, 442127), (53851, 375099), (63161, 319809), (99813, 202373), (106603, 189483), (125033, 161553)]