18409205

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{1009}}^1$

素因数の和:1144

約数の個数: 16

約数和(自身を含む): 22906800

約数和(自身を除く): 4497595

約数列:

[1, 5, 41, 89, 205, 445, 1009, 3649, 5045, 18245, 41369, 89801, 206845, 449005, 3681841, 18409205]

約数ペア:

[(1, 18409205), (5, 3681841), (41, 449005), (89, 206845), (205, 89801), (445, 41369), (1009, 18245), (3649, 5045)]