209788160

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:380

約数の個数: 144

約数和(自身を含む): 550996992

約数和(自身を除く): 341208832

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 32, 34, 40, 62, 64, 68, 80, 85, 124, 128, 136, 155, 160, 170, 248, 256, 272, 310, 311, 320, 340, 496, 527, 544, 620, 622, 640, 680, 992, 1054, 1088, 1240, 1244, 1280, 1360, 1555, 1984, 2108, 2176, 2480, 2488, 2635, 2720, 3110, 3968, 4216, 4352, 4960, 4976, 5270, 5287, 5440, 6220, 7936, 8432, 9641, 9920, 9952, 10540, 10574, 10880, 12440, 16864, 19282, 19840, 19904, 21080, 21148, 21760, 24880, 26435, 33728, 38564, 39680, 39808, 42160, 42296, 48205, 49760, 52870, 67456, 77128, 79616, 84320, 84592, 96410, 99520, 105740, 134912, 154256, 163897, 168640, 169184, 192820, 199040, 211480, 308512, 327794, 337280, 338368, 385640, 398080, 422960, 617024, 655588, 674560, 676736, 771280, 819485, 845920, 1234048, 1311176, 1353472, 1542560, 1638970, 1691840, 2468096, 2622352, 3085120, 3277940, 3383680, 5244704, 6170240, 6555880, 6767360, 10489408, 12340480, 13111760, 20978816, 26223520, 41957632, 52447040, 104894080, 209788160]

約数ペア:

[(1, 209788160), (2, 104894080), (4, 52447040), (5, 41957632), (8, 26223520), (10, 20978816), (16, 13111760), (17, 12340480), (20, 10489408), (31, 6767360), (32, 6555880), (34, 6170240), (40, 5244704), (62, 3383680), (64, 3277940), (68, 3085120), (80, 2622352), (85, 2468096), (124, 1691840), (128, 1638970), (136, 1542560), (155, 1353472), (160, 1311176), (170, 1234048), (248, 845920), (256, 819485), (272, 771280), (310, 676736), (311, 674560), (320, 655588), (340, 617024), (496, 422960), (527, 398080), (544, 385640), (620, 338368), (622, 337280), (640, 327794), (680, 308512), (992, 211480), (1054, 199040), (1088, 192820), (1240, 169184), (1244, 168640), (1280, 163897), (1360, 154256), (1555, 134912), (1984, 105740), (2108, 99520), (2176, 96410), (2480, 84592), (2488, 84320), (2635, 79616), (2720, 77128), (3110, 67456), (3968, 52870), (4216, 49760), (4352, 48205), (4960, 42296), (4976, 42160), (5270, 39808), (5287, 39680), (5440, 38564), (6220, 33728), (7936, 26435), (8432, 24880), (9641, 21760), (9920, 21148), (9952, 21080), (10540, 19904), (10574, 19840), (10880, 19282), (12440, 16864)]