20289280

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^2\times {\mathrm{131}}^1$

素因数の和:174

約数の個数: 108

約数和(自身を含む): 53826696

約数和(自身を除く): 33537416

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 128, 131, 160, 176, 220, 242, 256, 262, 320, 352, 440, 484, 524, 605, 640, 655, 704, 880, 968, 1048, 1210, 1280, 1310, 1408, 1441, 1760, 1936, 2096, 2420, 2620, 2816, 2882, 3520, 3872, 4192, 4840, 5240, 5764, 7040, 7205, 7744, 8384, 9680, 10480, 11528, 14080, 14410, 15488, 15851, 16768, 19360, 20960, 23056, 28820, 30976, 31702, 33536, 38720, 41920, 46112, 57640, 63404, 77440, 79255, 83840, 92224, 115280, 126808, 154880, 158510, 167680, 184448, 230560, 253616, 317020, 368896, 461120, 507232, 634040, 922240, 1014464, 1268080, 1844480, 2028928, 2536160, 4057856, 5072320, 10144640, 20289280]

約数ペア:

[(1, 20289280), (2, 10144640), (4, 5072320), (5, 4057856), (8, 2536160), (10, 2028928), (11, 1844480), (16, 1268080), (20, 1014464), (22, 922240), (32, 634040), (40, 507232), (44, 461120), (55, 368896), (64, 317020), (80, 253616), (88, 230560), (110, 184448), (121, 167680), (128, 158510), (131, 154880), (160, 126808), (176, 115280), (220, 92224), (242, 83840), (256, 79255), (262, 77440), (320, 63404), (352, 57640), (440, 46112), (484, 41920), (524, 38720), (605, 33536), (640, 31702), (655, 30976), (704, 28820), (880, 23056), (968, 20960), (1048, 19360), (1210, 16768), (1280, 15851), (1310, 15488), (1408, 14410), (1441, 14080), (1760, 11528), (1936, 10480), (2096, 9680), (2420, 8384), (2620, 7744), (2816, 7205), (2882, 7040), (3520, 5764), (3872, 5240), (4192, 4840)]