18122013

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:171

約数の個数: 72

約数和(自身を含む): 34234200

約数和(自身を除く): 16112187

約数列:

[1, 3, 7, 9, 13, 21, 29, 39, 49, 63, 87, 91, 109, 117, 147, 203, 261, 273, 327, 377, 441, 609, 637, 763, 819, 981, 1131, 1417, 1421, 1827, 1911, 2289, 2639, 3161, 3393, 4251, 4263, 5341, 5733, 6867, 7917, 9483, 9919, 12753, 12789, 16023, 18473, 22127, 23751, 28449, 29757, 41093, 48069, 55419, 66381, 69433, 89271, 123279, 154889, 166257, 199143, 208299, 287651, 369837, 464667, 624897, 862953, 1394001, 2013557, 2588859, 6040671, 18122013]

約数ペア:

[(1, 18122013), (3, 6040671), (7, 2588859), (9, 2013557), (13, 1394001), (21, 862953), (29, 624897), (39, 464667), (49, 369837), (63, 287651), (87, 208299), (91, 199143), (109, 166257), (117, 154889), (147, 123279), (203, 89271), (261, 69433), (273, 66381), (327, 55419), (377, 48069), (441, 41093), (609, 29757), (637, 28449), (763, 23751), (819, 22127), (981, 18473), (1131, 16023), (1417, 12789), (1421, 12753), (1827, 9919), (1911, 9483), (2289, 7917), (2639, 6867), (3161, 5733), (3393, 5341), (4251, 4263)]