21771904

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^2$

素因数の和:126

約数の個数: 96

約数和(自身を含む): 55251360

約数和(自身を除く): 33479456

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 47, 56, 64, 77, 88, 94, 112, 128, 154, 176, 188, 224, 308, 329, 352, 376, 448, 517, 616, 658, 704, 752, 896, 1034, 1232, 1316, 1408, 1504, 2068, 2209, 2464, 2632, 3008, 3619, 4136, 4418, 4928, 5264, 6016, 7238, 8272, 8836, 9856, 10528, 14476, 15463, 16544, 17672, 21056, 24299, 28952, 30926, 33088, 35344, 42112, 48598, 57904, 61852, 66176, 70688, 97196, 115808, 123704, 141376, 170093, 194392, 231616, 247408, 282752, 340186, 388784, 463232, 494816, 680372, 777568, 989632, 1360744, 1555136, 1979264, 2721488, 3110272, 5442976, 10885952, 21771904]

約数ペア:

[(1, 21771904), (2, 10885952), (4, 5442976), (7, 3110272), (8, 2721488), (11, 1979264), (14, 1555136), (16, 1360744), (22, 989632), (28, 777568), (32, 680372), (44, 494816), (47, 463232), (56, 388784), (64, 340186), (77, 282752), (88, 247408), (94, 231616), (112, 194392), (128, 170093), (154, 141376), (176, 123704), (188, 115808), (224, 97196), (308, 70688), (329, 66176), (352, 61852), (376, 57904), (448, 48598), (517, 42112), (616, 35344), (658, 33088), (704, 30926), (752, 28952), (896, 24299), (1034, 21056), (1232, 17672), (1316, 16544), (1408, 15463), (1504, 14476), (2068, 10528), (2209, 9856), (2464, 8836), (2632, 8272), (3008, 7238), (3619, 6016), (4136, 5264), (4418, 4928)]