20085964423

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{23}}^2\times {\mathrm{137}}^2$

素因数の和:361

約数の個数: 54

約数和(自身を含む): 25678882376

約数和(自身を除く): 5592917953

約数列:

[1, 7, 17, 23, 119, 137, 161, 289, 391, 529, 959, 2023, 2329, 2737, 3151, 3703, 6647, 8993, 16303, 18769, 22057, 39593, 46529, 53567, 62951, 72473, 131383, 152881, 277151, 319073, 374969, 431687, 507311, 910639, 1070167, 1232041, 2233511, 3021809, 5424241, 6374473, 7338679, 8624287, 9928801, 20944697, 37969687, 51370753, 69501607, 124757543, 146612879, 168789617, 873302801, 1181527319, 2869423489, 20085964423]

約数ペア:

[(1, 20085964423), (7, 2869423489), (17, 1181527319), (23, 873302801), (119, 168789617), (137, 146612879), (161, 124757543), (289, 69501607), (391, 51370753), (529, 37969687), (959, 20944697), (2023, 9928801), (2329, 8624287), (2737, 7338679), (3151, 6374473), (3703, 5424241), (6647, 3021809), (8993, 2233511), (16303, 1232041), (18769, 1070167), (22057, 910639), (39593, 507311), (46529, 431687), (53567, 374969), (62951, 319073), (72473, 277151), (131383, 152881)]