256486720

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1709}}^1$

素因数の和:1800

約数の個数: 112

約数和(自身を含む): 708842880

約数和(自身を除く): 452356160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 67, 70, 80, 112, 134, 140, 160, 224, 268, 280, 320, 335, 448, 469, 536, 560, 670, 938, 1072, 1120, 1340, 1709, 1876, 2144, 2240, 2345, 2680, 3418, 3752, 4288, 4690, 5360, 6836, 7504, 8545, 9380, 10720, 11963, 13672, 15008, 17090, 18760, 21440, 23926, 27344, 30016, 34180, 37520, 47852, 54688, 59815, 68360, 75040, 95704, 109376, 114503, 119630, 136720, 150080, 191408, 229006, 239260, 273440, 382816, 458012, 478520, 546880, 572515, 765632, 801521, 916024, 957040, 1145030, 1603042, 1832048, 1914080, 2290060, 3206084, 3664096, 3828160, 4007605, 4580120, 6412168, 7328192, 8015210, 9160240, 12824336, 16030420, 18320480, 25648672, 32060840, 36640960, 51297344, 64121680, 128243360, 256486720]

約数ペア:

[(1, 256486720), (2, 128243360), (4, 64121680), (5, 51297344), (7, 36640960), (8, 32060840), (10, 25648672), (14, 18320480), (16, 16030420), (20, 12824336), (28, 9160240), (32, 8015210), (35, 7328192), (40, 6412168), (56, 4580120), (64, 4007605), (67, 3828160), (70, 3664096), (80, 3206084), (112, 2290060), (134, 1914080), (140, 1832048), (160, 1603042), (224, 1145030), (268, 957040), (280, 916024), (320, 801521), (335, 765632), (448, 572515), (469, 546880), (536, 478520), (560, 458012), (670, 382816), (938, 273440), (1072, 239260), (1120, 229006), (1340, 191408), (1709, 150080), (1876, 136720), (2144, 119630), (2240, 114503), (2345, 109376), (2680, 95704), (3418, 75040), (3752, 68360), (4288, 59815), (4690, 54688), (5360, 47852), (6836, 37520), (7504, 34180), (8545, 30016), (9380, 27344), (10720, 23926), (11963, 21440), (13672, 18760), (15008, 17090)]