18920559

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{911}}^1$

素因数の和:987

約数の個数: 32

約数和(自身を含む): 30818304

約数和(自身を除く): 11897745

約数列:

[1, 3, 7, 21, 23, 43, 69, 129, 161, 301, 483, 903, 911, 989, 2733, 2967, 6377, 6923, 19131, 20769, 20953, 39173, 62859, 117519, 146671, 274211, 440013, 822633, 900979, 2702937, 6306853, 18920559]

約数ペア:

[(1, 18920559), (3, 6306853), (7, 2702937), (21, 900979), (23, 822633), (43, 440013), (69, 274211), (129, 146671), (161, 117519), (301, 62859), (483, 39173), (903, 20953), (911, 20769), (989, 19131), (2733, 6923), (2967, 6377)]