21220166

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:380

約数の個数: 32

約数和(自身を含む): 36115200

約数和(自身を除く): 14895034

約数列:

[1, 2, 11, 22, 37, 74, 131, 199, 262, 398, 407, 814, 1441, 2189, 2882, 4378, 4847, 7363, 9694, 14726, 26069, 52138, 53317, 80993, 106634, 161986, 286759, 573518, 964553, 1929106, 10610083, 21220166]

約数ペア:

[(1, 21220166), (2, 10610083), (11, 1929106), (22, 964553), (37, 573518), (74, 286759), (131, 161986), (199, 106634), (262, 80993), (398, 53317), (407, 52138), (814, 26069), (1441, 14726), (2189, 9694), (2882, 7363), (4378, 4847)]