21028164

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1249}}^1$

素因数の和:1340

約数の個数: 48

約数和(自身を含む): 52080000

約数和(自身を除く): 31051836

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 61, 69, 92, 122, 138, 183, 244, 276, 366, 732, 1249, 1403, 2498, 2806, 3747, 4209, 4996, 5612, 7494, 8418, 14988, 16836, 28727, 57454, 76189, 86181, 114908, 152378, 172362, 228567, 304756, 344724, 457134, 914268, 1752347, 3504694, 5257041, 7009388, 10514082, 21028164]

約数ペア:

[(1, 21028164), (2, 10514082), (3, 7009388), (4, 5257041), (6, 3504694), (12, 1752347), (23, 914268), (46, 457134), (61, 344724), (69, 304756), (92, 228567), (122, 172362), (138, 152378), (183, 114908), (244, 86181), (276, 76189), (366, 57454), (732, 28727), (1249, 16836), (1403, 14988), (2498, 8418), (2806, 7494), (3747, 5612), (4209, 4996)]