21906006

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{431}}^1$

素因数の和:676

約数の個数: 32

約数和(自身を含む): 45163008

約数和(自身を除く): 23257002

約数列:

[1, 2, 3, 6, 43, 86, 129, 197, 258, 394, 431, 591, 862, 1182, 1293, 2586, 8471, 16942, 18533, 25413, 37066, 50826, 55599, 84907, 111198, 169814, 254721, 509442, 3651001, 7302002, 10953003, 21906006]

約数ペア:

[(1, 21906006), (2, 10953003), (3, 7302002), (6, 3651001), (43, 509442), (86, 254721), (129, 169814), (197, 111198), (258, 84907), (394, 55599), (431, 50826), (591, 37066), (862, 25413), (1182, 18533), (1293, 16942), (2586, 8471)]