19505920

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{311}}^1$

素因数の和:346

約数の個数: 108

約数和(自身を含む): 54525744

約数和(自身を除く): 35019824

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 311, 320, 392, 448, 490, 560, 622, 640, 784, 896, 980, 1120, 1244, 1280, 1555, 1568, 1792, 1960, 2177, 2240, 2488, 3110, 3136, 3920, 4354, 4480, 4976, 6220, 6272, 7840, 8708, 8960, 9952, 10885, 12440, 12544, 15239, 15680, 17416, 19904, 21770, 24880, 30478, 31360, 34832, 39808, 43540, 49760, 60956, 62720, 69664, 76195, 79616, 87080, 99520, 121912, 139328, 152390, 174160, 199040, 243824, 278656, 304780, 348320, 398080, 487648, 557312, 609560, 696640, 975296, 1219120, 1393280, 1950592, 2438240, 2786560, 3901184, 4876480, 9752960, 19505920]

約数ペア:

[(1, 19505920), (2, 9752960), (4, 4876480), (5, 3901184), (7, 2786560), (8, 2438240), (10, 1950592), (14, 1393280), (16, 1219120), (20, 975296), (28, 696640), (32, 609560), (35, 557312), (40, 487648), (49, 398080), (56, 348320), (64, 304780), (70, 278656), (80, 243824), (98, 199040), (112, 174160), (128, 152390), (140, 139328), (160, 121912), (196, 99520), (224, 87080), (245, 79616), (256, 76195), (280, 69664), (311, 62720), (320, 60956), (392, 49760), (448, 43540), (490, 39808), (560, 34832), (622, 31360), (640, 30478), (784, 24880), (896, 21770), (980, 19904), (1120, 17416), (1244, 15680), (1280, 15239), (1555, 12544), (1568, 12440), (1792, 10885), (1960, 9952), (2177, 8960), (2240, 8708), (2488, 7840), (3110, 6272), (3136, 6220), (3920, 4976), (4354, 4480)]