20042440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:175

約数の個数: 96

約数和(自身を含む): 51279480

約数和(自身を除く): 31237040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 101, 110, 121, 164, 202, 205, 220, 242, 328, 404, 410, 440, 451, 484, 505, 605, 808, 820, 902, 968, 1010, 1111, 1210, 1640, 1804, 2020, 2222, 2255, 2420, 3608, 4040, 4141, 4444, 4510, 4840, 4961, 5555, 8282, 8888, 9020, 9922, 11110, 12221, 16564, 18040, 19844, 20705, 22220, 24442, 24805, 33128, 39688, 41410, 44440, 45551, 48884, 49610, 61105, 82820, 91102, 97768, 99220, 122210, 165640, 182204, 198440, 227755, 244420, 364408, 455510, 488840, 501061, 911020, 1002122, 1822040, 2004244, 2505305, 4008488, 5010610, 10021220, 20042440]

約数ペア:

[(1, 20042440), (2, 10021220), (4, 5010610), (5, 4008488), (8, 2505305), (10, 2004244), (11, 1822040), (20, 1002122), (22, 911020), (40, 501061), (41, 488840), (44, 455510), (55, 364408), (82, 244420), (88, 227755), (101, 198440), (110, 182204), (121, 165640), (164, 122210), (202, 99220), (205, 97768), (220, 91102), (242, 82820), (328, 61105), (404, 49610), (410, 48884), (440, 45551), (451, 44440), (484, 41410), (505, 39688), (605, 33128), (808, 24805), (820, 24442), (902, 22220), (968, 20705), (1010, 19844), (1111, 18040), (1210, 16564), (1640, 12221), (1804, 11110), (2020, 9922), (2222, 9020), (2255, 8888), (2420, 8282), (3608, 5555), (4040, 4961), (4141, 4840), (4444, 4510)]