20808211880

素因数分解:

$2^3\times 5^1\times {\mathrm{75403}}^1\times {\mathrm{6899}}^1$

素因数の和:82313

約数の個数: 32

約数和(自身を含む): 46825884000

約数和(自身を除く): 26017672120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6899, 13798, 27596, 34495, 55192, 68990, 75403, 137980, 150806, 275960, 301612, 377015, 603224, 754030, 1508060, 3016120, 520205297, 1040410594, 2080821188, 2601026485, 4161642376, 5202052970, 10404105940, 20808211880]

約数ペア:

[(1, 20808211880), (2, 10404105940), (4, 5202052970), (5, 4161642376), (8, 2601026485), (10, 2080821188), (20, 1040410594), (40, 520205297), (6899, 3016120), (13798, 1508060), (27596, 754030), (34495, 603224), (55192, 377015), (68990, 301612), (75403, 275960), (137980, 150806)]