21284516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{4987}}^1$

素因数の和:5099

約数の個数: 24

約数和(自身を含む): 41061216

約数和(自身を除く): 19776700

約数列:

[1, 2, 4, 11, 22, 44, 97, 194, 388, 1067, 2134, 4268, 4987, 9974, 19948, 54857, 109714, 219428, 483739, 967478, 1934956, 5321129, 10642258, 21284516]

約数ペア:

[(1, 21284516), (2, 10642258), (4, 5321129), (11, 1934956), (22, 967478), (44, 483739), (97, 219428), (194, 109714), (388, 54857), (1067, 19948), (2134, 9974), (4268, 4987)]