388817440

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{220919}}^1$

素因数の和:220945

約数の個数: 48

約数和(自身を含む): 1002093120

約数和(自身を除く): 613275680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 220919, 441838, 883676, 1104595, 1767352, 2209190, 2430109, 3534704, 4418380, 4860218, 7069408, 8836760, 9720436, 12150545, 17673520, 19440872, 24301090, 35347040, 38881744, 48602180, 77763488, 97204360, 194408720, 388817440]

約数ペア:

[(1, 388817440), (2, 194408720), (4, 97204360), (5, 77763488), (8, 48602180), (10, 38881744), (11, 35347040), (16, 24301090), (20, 19440872), (22, 17673520), (32, 12150545), (40, 9720436), (44, 8836760), (55, 7069408), (80, 4860218), (88, 4418380), (110, 3534704), (160, 2430109), (176, 2209190), (220, 1767352), (352, 1104595), (440, 883676), (880, 441838), (1760, 220919)]