20456605

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 27247968

約数和(自身を除く): 6791363

約数列:

[1, 5, 13, 43, 65, 169, 215, 559, 563, 845, 2795, 2815, 7267, 7319, 24209, 36335, 36595, 95147, 121045, 314717, 475735, 1573585, 4091321, 20456605]

約数ペア:

[(1, 20456605), (5, 4091321), (13, 1573585), (43, 475735), (65, 314717), (169, 121045), (215, 95147), (559, 36595), (563, 36335), (845, 24209), (2795, 7319), (2815, 7267)]