20001212

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{9277}}^1$

素因数の和:9306

約数の個数: 36

約数和(自身を含む): 44423064

約数和(自身を除く): 24421852

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 539, 1078, 2156, 9277, 18554, 37108, 64939, 102047, 129878, 204094, 259756, 408188, 454573, 714329, 909146, 1428658, 1818292, 2857316, 5000303, 10000606, 20001212]

約数ペア:

[(1, 20001212), (2, 10000606), (4, 5000303), (7, 2857316), (11, 1818292), (14, 1428658), (22, 909146), (28, 714329), (44, 454573), (49, 408188), (77, 259756), (98, 204094), (154, 129878), (196, 102047), (308, 64939), (539, 37108), (1078, 18554), (2156, 9277)]