2129121520

素因数分解:

$2^4\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{13327}}^1$

素因数の和:15337

約数の個数: 40

約数和(自身を含む): 4953057984

約数和(自身を除く): 2823936464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1997, 3994, 7988, 9985, 13327, 15976, 19970, 26654, 31952, 39940, 53308, 66635, 79880, 106616, 133270, 159760, 213232, 266540, 533080, 1066160, 26614019, 53228038, 106456076, 133070095, 212912152, 266140190, 425824304, 532280380, 1064560760, 2129121520]

約数ペア:

[(1, 2129121520), (2, 1064560760), (4, 532280380), (5, 425824304), (8, 266140190), (10, 212912152), (16, 133070095), (20, 106456076), (40, 53228038), (80, 26614019), (1997, 1066160), (3994, 533080), (7988, 266540), (9985, 213232), (13327, 159760), (15976, 133270), (19970, 106616), (26654, 79880), (31952, 66635), (39940, 53308)]