18716368

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{193}}^1$

素因数の和:260

約数の個数: 80

約数和(自身を含む): 43300800

約数和(自身を除く): 24584432

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 29, 38, 44, 58, 76, 88, 116, 152, 176, 193, 209, 232, 304, 319, 386, 418, 464, 551, 638, 772, 836, 1102, 1276, 1544, 1672, 2123, 2204, 2552, 3088, 3344, 3667, 4246, 4408, 5104, 5597, 6061, 7334, 8492, 8816, 11194, 12122, 14668, 16984, 22388, 24244, 29336, 33968, 40337, 44776, 48488, 58672, 61567, 80674, 89552, 96976, 106343, 123134, 161348, 212686, 246268, 322696, 425372, 492536, 645392, 850744, 985072, 1169773, 1701488, 2339546, 4679092, 9358184, 18716368]

約数ペア:

[(1, 18716368), (2, 9358184), (4, 4679092), (8, 2339546), (11, 1701488), (16, 1169773), (19, 985072), (22, 850744), (29, 645392), (38, 492536), (44, 425372), (58, 322696), (76, 246268), (88, 212686), (116, 161348), (152, 123134), (176, 106343), (193, 96976), (209, 89552), (232, 80674), (304, 61567), (319, 58672), (386, 48488), (418, 44776), (464, 40337), (551, 33968), (638, 29336), (772, 24244), (836, 22388), (1102, 16984), (1276, 14668), (1544, 12122), (1672, 11194), (2123, 8816), (2204, 8492), (2552, 7334), (3088, 6061), (3344, 5597), (3667, 5104), (4246, 4408)]