281565284

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{70321}}^1$

素因数の和:70356

約数の個数: 48

約数和(自身を含む): 661589376

約数和(自身を除く): 380024092

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 70321, 140642, 281284, 492247, 773531, 914173, 984494, 1547062, 1828346, 1968988, 3094124, 3656692, 5414717, 6399211, 10055903, 10829434, 12798422, 20111806, 21658868, 25596844, 40223612, 70391321, 140782642, 281565284]

約数ペア:

[(1, 281565284), (2, 140782642), (4, 70391321), (7, 40223612), (11, 25596844), (13, 21658868), (14, 20111806), (22, 12798422), (26, 10829434), (28, 10055903), (44, 6399211), (52, 5414717), (77, 3656692), (91, 3094124), (143, 1968988), (154, 1828346), (182, 1547062), (286, 984494), (308, 914173), (364, 773531), (572, 492247), (1001, 281284), (2002, 140642), (4004, 70321)]