21046784

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:167

約数の個数: 80

約数和(自身を含む): 47581776

約数和(自身を除く): 26534992

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 37, 44, 64, 74, 88, 101, 128, 148, 176, 202, 256, 296, 352, 404, 407, 512, 592, 704, 808, 814, 1111, 1184, 1408, 1616, 1628, 2222, 2368, 2816, 3232, 3256, 3737, 4444, 4736, 5632, 6464, 6512, 7474, 8888, 9472, 12928, 13024, 14948, 17776, 18944, 25856, 26048, 29896, 35552, 41107, 51712, 52096, 59792, 71104, 82214, 104192, 119584, 142208, 164428, 208384, 239168, 284416, 328856, 478336, 568832, 657712, 956672, 1315424, 1913344, 2630848, 5261696, 10523392, 21046784]

約数ペア:

[(1, 21046784), (2, 10523392), (4, 5261696), (8, 2630848), (11, 1913344), (16, 1315424), (22, 956672), (32, 657712), (37, 568832), (44, 478336), (64, 328856), (74, 284416), (88, 239168), (101, 208384), (128, 164428), (148, 142208), (176, 119584), (202, 104192), (256, 82214), (296, 71104), (352, 59792), (404, 52096), (407, 51712), (512, 41107), (592, 35552), (704, 29896), (808, 26048), (814, 25856), (1111, 18944), (1184, 17776), (1408, 14948), (1616, 13024), (1628, 12928), (2222, 9472), (2368, 8888), (2816, 7474), (3232, 6512), (3256, 6464), (3737, 5632), (4444, 4736)]