21120960

素因数分解:

$2^6\times 3^1\times 5^1\times 7^2\times {\mathrm{449}}^1$

素因数の和:483

約数の個数: 168

約数和(自身を含む): 78181200

約数和(自身を除く): 57060240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 64, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 192, 196, 210, 224, 240, 245, 280, 294, 320, 336, 392, 420, 448, 449, 480, 490, 560, 588, 672, 735, 784, 840, 898, 960, 980, 1120, 1176, 1344, 1347, 1470, 1568, 1680, 1796, 1960, 2240, 2245, 2352, 2694, 2940, 3136, 3143, 3360, 3592, 3920, 4490, 4704, 5388, 5880, 6286, 6720, 6735, 7184, 7840, 8980, 9408, 9429, 10776, 11760, 12572, 13470, 14368, 15680, 15715, 17960, 18858, 21552, 22001, 23520, 25144, 26940, 28736, 31430, 35920, 37716, 43104, 44002, 47040, 47145, 50288, 53880, 62860, 66003, 71840, 75432, 86208, 88004, 94290, 100576, 107760, 110005, 125720, 132006, 143680, 150864, 176008, 188580, 201152, 215520, 220010, 251440, 264012, 301728, 330015, 352016, 377160, 431040, 440020, 502880, 528024, 603456, 660030, 704032, 754320, 880040, 1005760, 1056048, 1320060, 1408064, 1508640, 1760080, 2112096, 2640120, 3017280, 3520160, 4224192, 5280240, 7040320, 10560480, 21120960]

約数ペア:

[(1, 21120960), (2, 10560480), (3, 7040320), (4, 5280240), (5, 4224192), (6, 3520160), (7, 3017280), (8, 2640120), (10, 2112096), (12, 1760080), (14, 1508640), (15, 1408064), (16, 1320060), (20, 1056048), (21, 1005760), (24, 880040), (28, 754320), (30, 704032), (32, 660030), (35, 603456), (40, 528024), (42, 502880), (48, 440020), (49, 431040), (56, 377160), (60, 352016), (64, 330015), (70, 301728), (80, 264012), (84, 251440), (96, 220010), (98, 215520), (105, 201152), (112, 188580), (120, 176008), (140, 150864), (147, 143680), (160, 132006), (168, 125720), (192, 110005), (196, 107760), (210, 100576), (224, 94290), (240, 88004), (245, 86208), (280, 75432), (294, 71840), (320, 66003), (336, 62860), (392, 53880), (420, 50288), (448, 47145), (449, 47040), (480, 44002), (490, 43104), (560, 37716), (588, 35920), (672, 31430), (735, 28736), (784, 26940), (840, 25144), (898, 23520), (960, 22001), (980, 21552), (1120, 18858), (1176, 17960), (1344, 15715), (1347, 15680), (1470, 14368), (1568, 13470), (1680, 12572), (1796, 11760), (1960, 10776), (2240, 9429), (2245, 9408), (2352, 8980), (2694, 7840), (2940, 7184), (3136, 6735), (3143, 6720), (3360, 6286), (3592, 5880), (3920, 5388), (4490, 4704)]