18295984

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:218

約数の個数: 80

約数和(自身を含む): 43211520

約数和(自身を除く): 24915536

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 43, 56, 58, 86, 112, 116, 131, 172, 203, 232, 262, 301, 344, 406, 464, 524, 602, 688, 812, 917, 1048, 1204, 1247, 1624, 1834, 2096, 2408, 2494, 3248, 3668, 3799, 4816, 4988, 5633, 7336, 7598, 8729, 9976, 11266, 14672, 15196, 17458, 19952, 22532, 26593, 30392, 34916, 39431, 45064, 53186, 60784, 69832, 78862, 90128, 106372, 139664, 157724, 163357, 212744, 315448, 326714, 425488, 630896, 653428, 1143499, 1306856, 2286998, 2613712, 4573996, 9147992, 18295984]

約数ペア:

[(1, 18295984), (2, 9147992), (4, 4573996), (7, 2613712), (8, 2286998), (14, 1306856), (16, 1143499), (28, 653428), (29, 630896), (43, 425488), (56, 326714), (58, 315448), (86, 212744), (112, 163357), (116, 157724), (131, 139664), (172, 106372), (203, 90128), (232, 78862), (262, 69832), (301, 60784), (344, 53186), (406, 45064), (464, 39431), (524, 34916), (602, 30392), (688, 26593), (812, 22532), (917, 19952), (1048, 17458), (1204, 15196), (1247, 14672), (1624, 11266), (1834, 9976), (2096, 8729), (2408, 7598), (2494, 7336), (3248, 5633), (3668, 4988), (3799, 4816)]