20689228

素因数分解:

$2^2\times 7^1\times {\mathrm{631}}^1\times {\mathrm{1171}}^1$

素因数の和:1813

約数の個数: 24

約数和(自身を含む): 41479424

約数和(自身を除く): 20790196

約数列:

[1, 2, 4, 7, 14, 28, 631, 1171, 1262, 2342, 2524, 4417, 4684, 8197, 8834, 16394, 17668, 32788, 738901, 1477802, 2955604, 5172307, 10344614, 20689228]

約数ペア:

[(1, 20689228), (2, 10344614), (4, 5172307), (7, 2955604), (14, 1477802), (28, 738901), (631, 32788), (1171, 17668), (1262, 16394), (2342, 8834), (2524, 8197), (4417, 4684)]