19940864

素因数分解:

$2^9\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:143

約数の個数: 80

約数和(自身を含む): 44193600

約数和(自身を除く): 24252736

約数列:

[1, 2, 4, 8, 16, 17, 29, 32, 34, 58, 64, 68, 79, 116, 128, 136, 158, 232, 256, 272, 316, 464, 493, 512, 544, 632, 928, 986, 1088, 1264, 1343, 1856, 1972, 2176, 2291, 2528, 2686, 3712, 3944, 4352, 4582, 5056, 5372, 7424, 7888, 8704, 9164, 10112, 10744, 14848, 15776, 18328, 20224, 21488, 31552, 36656, 38947, 40448, 42976, 63104, 73312, 77894, 85952, 126208, 146624, 155788, 171904, 252416, 293248, 311576, 343808, 586496, 623152, 687616, 1172992, 1246304, 2492608, 4985216, 9970432, 19940864]

約数ペア:

[(1, 19940864), (2, 9970432), (4, 4985216), (8, 2492608), (16, 1246304), (17, 1172992), (29, 687616), (32, 623152), (34, 586496), (58, 343808), (64, 311576), (68, 293248), (79, 252416), (116, 171904), (128, 155788), (136, 146624), (158, 126208), (232, 85952), (256, 77894), (272, 73312), (316, 63104), (464, 42976), (493, 40448), (512, 38947), (544, 36656), (632, 31552), (928, 21488), (986, 20224), (1088, 18328), (1264, 15776), (1343, 14848), (1856, 10744), (1972, 10112), (2176, 9164), (2291, 8704), (2528, 7888), (2686, 7424), (3712, 5372), (3944, 5056), (4352, 4582)]