20445080

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5743}}^1$

素因数の和:5843

約数の個数: 32

約数和(自身を含む): 46526400

約数和(自身を除く): 26081320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5743, 11486, 22972, 28715, 45944, 57430, 114860, 229720, 511127, 1022254, 2044508, 2555635, 4089016, 5111270, 10222540, 20445080]

約数ペア:

[(1, 20445080), (2, 10222540), (4, 5111270), (5, 4089016), (8, 2555635), (10, 2044508), (20, 1022254), (40, 511127), (89, 229720), (178, 114860), (356, 57430), (445, 45944), (712, 28715), (890, 22972), (1780, 11486), (3560, 5743)]