20289841

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 25804800

約数和(自身を除く): 5514959

約数列:

[1, 11, 13, 23, 31, 143, 199, 253, 299, 341, 403, 713, 2189, 2587, 3289, 4433, 4577, 6169, 7843, 9269, 28457, 50347, 59501, 67859, 80197, 101959, 141887, 654511, 882167, 1560757, 1844531, 20289841]

約数ペア:

[(1, 20289841), (11, 1844531), (13, 1560757), (23, 882167), (31, 654511), (143, 141887), (199, 101959), (253, 80197), (299, 67859), (341, 59501), (403, 50347), (713, 28457), (2189, 9269), (2587, 7843), (3289, 6169), (4433, 4577)]