20928712

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{16249}}^1$

素因数の和:16285

約数の個数: 32

約数和(自身を含む): 46800000

約数和(自身を除く): 25871288

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 644, 1288, 16249, 32498, 64996, 113743, 129992, 227486, 373727, 454972, 747454, 909944, 1494908, 2616089, 2989816, 5232178, 10464356, 20928712]

約数ペア:

[(1, 20928712), (2, 10464356), (4, 5232178), (7, 2989816), (8, 2616089), (14, 1494908), (23, 909944), (28, 747454), (46, 454972), (56, 373727), (92, 227486), (161, 129992), (184, 113743), (322, 64996), (644, 32498), (1288, 16249)]