21000894400

素因数分解:

$2^6\times 5^2\times {\mathrm{137}}^1\times {\mathrm{149}}^1\times {\mathrm{643}}^1$

素因数の和:951

約数の個数: 168

約数和(自身を含む): 52483359600

約数和(自身を除く): 31482465200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 137, 149, 160, 200, 274, 298, 320, 400, 548, 596, 643, 685, 745, 800, 1096, 1192, 1286, 1370, 1490, 1600, 2192, 2384, 2572, 2740, 2980, 3215, 3425, 3725, 4384, 4768, 5144, 5480, 5960, 6430, 6850, 7450, 8768, 9536, 10288, 10960, 11920, 12860, 13700, 14900, 16075, 20413, 20576, 21920, 23840, 25720, 27400, 29800, 32150, 40826, 41152, 43840, 47680, 51440, 54800, 59600, 64300, 81652, 88091, 95807, 102065, 102880, 109600, 119200, 128600, 163304, 176182, 191614, 204130, 205760, 219200, 238400, 257200, 326608, 352364, 383228, 408260, 440455, 479035, 510325, 514400, 653216, 704728, 766456, 816520, 880910, 958070, 1020650, 1028800, 1306432, 1409456, 1532912, 1633040, 1761820, 1916140, 2041300, 2202275, 2395175, 2818912, 3065824, 3266080, 3523640, 3832280, 4082600, 4404550, 4790350, 5637824, 6131648, 6532160, 7047280, 7664560, 8165200, 8809100, 9580700, 13125559, 14094560, 15329120, 16330400, 17618200, 19161400, 26251118, 28189120, 30658240, 32660800, 35236400, 38322800, 52502236, 65627795, 70472800, 76645600, 105004472, 131255590, 140945600, 153291200, 210008944, 262511180, 328138975, 420017888, 525022360, 656277950, 840035776, 1050044720, 1312555900, 2100089440, 2625111800, 4200178880, 5250223600, 10500447200, 21000894400]

約数ペア:

[(1, 21000894400), (2, 10500447200), (4, 5250223600), (5, 4200178880), (8, 2625111800), (10, 2100089440), (16, 1312555900), (20, 1050044720), (25, 840035776), (32, 656277950), (40, 525022360), (50, 420017888), (64, 328138975), (80, 262511180), (100, 210008944), (137, 153291200), (149, 140945600), (160, 131255590), (200, 105004472), (274, 76645600), (298, 70472800), (320, 65627795), (400, 52502236), (548, 38322800), (596, 35236400), (643, 32660800), (685, 30658240), (745, 28189120), (800, 26251118), (1096, 19161400), (1192, 17618200), (1286, 16330400), (1370, 15329120), (1490, 14094560), (1600, 13125559), (2192, 9580700), (2384, 8809100), (2572, 8165200), (2740, 7664560), (2980, 7047280), (3215, 6532160), (3425, 6131648), (3725, 5637824), (4384, 4790350), (4768, 4404550), (5144, 4082600), (5480, 3832280), (5960, 3523640), (6430, 3266080), (6850, 3065824), (7450, 2818912), (8768, 2395175), (9536, 2202275), (10288, 2041300), (10960, 1916140), (11920, 1761820), (12860, 1633040), (13700, 1532912), (14900, 1409456), (16075, 1306432), (20413, 1028800), (20576, 1020650), (21920, 958070), (23840, 880910), (25720, 816520), (27400, 766456), (29800, 704728), (32150, 653216), (40826, 514400), (41152, 510325), (43840, 479035), (47680, 440455), (51440, 408260), (54800, 383228), (59600, 352364), (64300, 326608), (81652, 257200), (88091, 238400), (95807, 219200), (102065, 205760), (102880, 204130), (109600, 191614), (119200, 176182), (128600, 163304)]