19991904

素因数分解:

$2^5\times 3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:252

約数の個数: 96

約数和(自身を含む): 55883520

約数和(自身を除く): 35891616

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 29, 32, 43, 48, 58, 86, 87, 96, 116, 129, 167, 172, 174, 232, 258, 334, 344, 348, 464, 501, 516, 668, 688, 696, 928, 1002, 1032, 1247, 1336, 1376, 1392, 2004, 2064, 2494, 2672, 2784, 3741, 4008, 4128, 4843, 4988, 5344, 7181, 7482, 8016, 9686, 9976, 14362, 14529, 14964, 16032, 19372, 19952, 21543, 28724, 29058, 29928, 38744, 39904, 43086, 57448, 58116, 59856, 77488, 86172, 114896, 116232, 119712, 154976, 172344, 208249, 229792, 232464, 344688, 416498, 464928, 624747, 689376, 832996, 1249494, 1665992, 2498988, 3331984, 4997976, 6663968, 9995952, 19991904]

約数ペア:

[(1, 19991904), (2, 9995952), (3, 6663968), (4, 4997976), (6, 3331984), (8, 2498988), (12, 1665992), (16, 1249494), (24, 832996), (29, 689376), (32, 624747), (43, 464928), (48, 416498), (58, 344688), (86, 232464), (87, 229792), (96, 208249), (116, 172344), (129, 154976), (167, 119712), (172, 116232), (174, 114896), (232, 86172), (258, 77488), (334, 59856), (344, 58116), (348, 57448), (464, 43086), (501, 39904), (516, 38744), (668, 29928), (688, 29058), (696, 28724), (928, 21543), (1002, 19952), (1032, 19372), (1247, 16032), (1336, 14964), (1376, 14529), (1392, 14362), (2004, 9976), (2064, 9686), (2494, 8016), (2672, 7482), (2784, 7181), (3741, 5344), (4008, 4988), (4128, 4843)]