638113280

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{5087}}^1$

素因数の和:5124

約数の個数: 120

約数和(自身を含む): 1780118208

約数和(自身を除く): 1142004928

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, 320, 392, 448, 490, 512, 560, 640, 784, 896, 980, 1120, 1280, 1568, 1792, 1960, 2240, 2560, 3136, 3584, 3920, 4480, 5087, 6272, 7840, 8960, 10174, 12544, 15680, 17920, 20348, 25088, 25435, 31360, 35609, 40696, 50870, 62720, 71218, 81392, 101740, 125440, 142436, 162784, 178045, 203480, 249263, 284872, 325568, 356090, 406960, 498526, 569744, 651136, 712180, 813920, 997052, 1139488, 1246315, 1302272, 1424360, 1627840, 1994104, 2278976, 2492630, 2604544, 2848720, 3255680, 3988208, 4557952, 4985260, 5697440, 6511360, 7976416, 9115904, 9970520, 11394880, 13022720, 15952832, 18231808, 19941040, 22789760, 31905664, 39882080, 45579520, 63811328, 79764160, 91159040, 127622656, 159528320, 319056640, 638113280]

約数ペア:

[(1, 638113280), (2, 319056640), (4, 159528320), (5, 127622656), (7, 91159040), (8, 79764160), (10, 63811328), (14, 45579520), (16, 39882080), (20, 31905664), (28, 22789760), (32, 19941040), (35, 18231808), (40, 15952832), (49, 13022720), (56, 11394880), (64, 9970520), (70, 9115904), (80, 7976416), (98, 6511360), (112, 5697440), (128, 4985260), (140, 4557952), (160, 3988208), (196, 3255680), (224, 2848720), (245, 2604544), (256, 2492630), (280, 2278976), (320, 1994104), (392, 1627840), (448, 1424360), (490, 1302272), (512, 1246315), (560, 1139488), (640, 997052), (784, 813920), (896, 712180), (980, 651136), (1120, 569744), (1280, 498526), (1568, 406960), (1792, 356090), (1960, 325568), (2240, 284872), (2560, 249263), (3136, 203480), (3584, 178045), (3920, 162784), (4480, 142436), (5087, 125440), (6272, 101740), (7840, 81392), (8960, 71218), (10174, 62720), (12544, 50870), (15680, 40696), (17920, 35609), (20348, 31360), (25088, 25435)]