20289760

素因数分解:

$2^5\times 5^1\times {\mathrm{211}}^1\times {\mathrm{601}}^1$

素因数の和:827

約数の個数: 48

約数和(自身を含む): 48241872

約数和(自身を除く): 27952112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 211, 422, 601, 844, 1055, 1202, 1688, 2110, 2404, 3005, 3376, 4220, 4808, 6010, 6752, 8440, 9616, 12020, 16880, 19232, 24040, 33760, 48080, 96160, 126811, 253622, 507244, 634055, 1014488, 1268110, 2028976, 2536220, 4057952, 5072440, 10144880, 20289760]

約数ペア:

[(1, 20289760), (2, 10144880), (4, 5072440), (5, 4057952), (8, 2536220), (10, 2028976), (16, 1268110), (20, 1014488), (32, 634055), (40, 507244), (80, 253622), (160, 126811), (211, 96160), (422, 48080), (601, 33760), (844, 24040), (1055, 19232), (1202, 16880), (1688, 12020), (2110, 9616), (2404, 8440), (3005, 6752), (3376, 6010), (4220, 4808)]