21809480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:199

約数の個数: 128

約数和(自身を含む): 62657280

約数和(自身を除く): 40847800

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 73, 77, 88, 97, 110, 140, 146, 154, 194, 220, 280, 292, 308, 365, 385, 388, 440, 485, 511, 584, 616, 679, 730, 770, 776, 803, 970, 1022, 1067, 1358, 1460, 1540, 1606, 1940, 2044, 2134, 2555, 2716, 2920, 3080, 3212, 3395, 3880, 4015, 4088, 4268, 5110, 5335, 5432, 5621, 6424, 6790, 7081, 7469, 8030, 8536, 10220, 10670, 11242, 13580, 14162, 14938, 16060, 20440, 21340, 22484, 27160, 28105, 28324, 29876, 32120, 35405, 37345, 42680, 44968, 49567, 56210, 56648, 59752, 70810, 74690, 77891, 99134, 112420, 141620, 149380, 155782, 198268, 224840, 247835, 283240, 298760, 311564, 389455, 396536, 495670, 545237, 623128, 778910, 991340, 1090474, 1557820, 1982680, 2180948, 2726185, 3115640, 4361896, 5452370, 10904740, 21809480]

約数ペア:

[(1, 21809480), (2, 10904740), (4, 5452370), (5, 4361896), (7, 3115640), (8, 2726185), (10, 2180948), (11, 1982680), (14, 1557820), (20, 1090474), (22, 991340), (28, 778910), (35, 623128), (40, 545237), (44, 495670), (55, 396536), (56, 389455), (70, 311564), (73, 298760), (77, 283240), (88, 247835), (97, 224840), (110, 198268), (140, 155782), (146, 149380), (154, 141620), (194, 112420), (220, 99134), (280, 77891), (292, 74690), (308, 70810), (365, 59752), (385, 56648), (388, 56210), (440, 49567), (485, 44968), (511, 42680), (584, 37345), (616, 35405), (679, 32120), (730, 29876), (770, 28324), (776, 28105), (803, 27160), (970, 22484), (1022, 21340), (1067, 20440), (1358, 16060), (1460, 14938), (1540, 14162), (1606, 13580), (1940, 11242), (2044, 10670), (2134, 10220), (2555, 8536), (2716, 8030), (2920, 7469), (3080, 7081), (3212, 6790), (3395, 6424), (3880, 5621), (4015, 5432), (4088, 5335), (4268, 5110)]