18036909

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 30750720

約数和(自身を除く): 12713811

約数列:

[1, 3, 9, 11, 19, 33, 43, 57, 99, 129, 171, 209, 223, 387, 473, 627, 669, 817, 1419, 1881, 2007, 2451, 2453, 4237, 4257, 7353, 7359, 8987, 9589, 12711, 22077, 26961, 28767, 38133, 46607, 80883, 86301, 105479, 139821, 182191, 316437, 419463, 546573, 949311, 1639719, 2004101, 6012303, 18036909]

約数ペア:

[(1, 18036909), (3, 6012303), (9, 2004101), (11, 1639719), (19, 949311), (33, 546573), (43, 419463), (57, 316437), (99, 182191), (129, 139821), (171, 105479), (209, 86301), (223, 80883), (387, 46607), (473, 38133), (627, 28767), (669, 26961), (817, 22077), (1419, 12711), (1881, 9589), (2007, 8987), (2451, 7359), (2453, 7353), (4237, 4257)]