21090576

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{463}}^1$

素因数の和:560

約数の個数: 80

約数和(自身を含む): 59607296

約数和(自身を除く): 38516720

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 73, 78, 104, 146, 156, 208, 219, 292, 312, 438, 463, 584, 624, 876, 926, 949, 1168, 1389, 1752, 1852, 1898, 2778, 2847, 3504, 3704, 3796, 5556, 5694, 6019, 7408, 7592, 11112, 11388, 12038, 15184, 18057, 22224, 22776, 24076, 33799, 36114, 45552, 48152, 67598, 72228, 96304, 101397, 135196, 144456, 202794, 270392, 288912, 405588, 439387, 540784, 811176, 878774, 1318161, 1622352, 1757548, 2636322, 3515096, 5272644, 7030192, 10545288, 21090576]

約数ペア:

[(1, 21090576), (2, 10545288), (3, 7030192), (4, 5272644), (6, 3515096), (8, 2636322), (12, 1757548), (13, 1622352), (16, 1318161), (24, 878774), (26, 811176), (39, 540784), (48, 439387), (52, 405588), (73, 288912), (78, 270392), (104, 202794), (146, 144456), (156, 135196), (208, 101397), (219, 96304), (292, 72228), (312, 67598), (438, 48152), (463, 45552), (584, 36114), (624, 33799), (876, 24076), (926, 22776), (949, 22224), (1168, 18057), (1389, 15184), (1752, 12038), (1852, 11388), (1898, 11112), (2778, 7592), (2847, 7408), (3504, 6019), (3704, 5694), (3796, 5556)]