20771408

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:304

約数の個数: 80

約数和(自身を含む): 49758720

約数和(自身を除く): 28987312

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 43, 56, 76, 86, 112, 133, 152, 172, 227, 266, 301, 304, 344, 454, 532, 602, 688, 817, 908, 1064, 1204, 1589, 1634, 1816, 2128, 2408, 3178, 3268, 3632, 4313, 4816, 5719, 6356, 6536, 8626, 9761, 11438, 12712, 13072, 17252, 19522, 22876, 25424, 30191, 34504, 39044, 45752, 60382, 68327, 69008, 78088, 91504, 120764, 136654, 156176, 185459, 241528, 273308, 370918, 483056, 546616, 741836, 1093232, 1298213, 1483672, 2596426, 2967344, 5192852, 10385704, 20771408]

約数ペア:

[(1, 20771408), (2, 10385704), (4, 5192852), (7, 2967344), (8, 2596426), (14, 1483672), (16, 1298213), (19, 1093232), (28, 741836), (38, 546616), (43, 483056), (56, 370918), (76, 273308), (86, 241528), (112, 185459), (133, 156176), (152, 136654), (172, 120764), (227, 91504), (266, 78088), (301, 69008), (304, 68327), (344, 60382), (454, 45752), (532, 39044), (602, 34504), (688, 30191), (817, 25424), (908, 22876), (1064, 19522), (1204, 17252), (1589, 13072), (1634, 12712), (1816, 11438), (2128, 9761), (2408, 8626), (3178, 6536), (3268, 6356), (3632, 5719), (4313, 4816)]