20266844

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 40901280

約数和(自身を除く): 20634436

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 73, 76, 146, 247, 281, 292, 494, 562, 949, 988, 1124, 1387, 1898, 2774, 3653, 3796, 5339, 5548, 7306, 10678, 14612, 18031, 20513, 21356, 36062, 41026, 69407, 72124, 82052, 138814, 266669, 277628, 389747, 533338, 779494, 1066676, 1558988, 5066711, 10133422, 20266844]

約数ペア:

[(1, 20266844), (2, 10133422), (4, 5066711), (13, 1558988), (19, 1066676), (26, 779494), (38, 533338), (52, 389747), (73, 277628), (76, 266669), (146, 138814), (247, 82052), (281, 72124), (292, 69407), (494, 41026), (562, 36062), (949, 21356), (988, 20513), (1124, 18031), (1387, 14612), (1898, 10678), (2774, 7306), (3653, 5548), (3796, 5339)]