20405308

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{683}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 24640196

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 97, 154, 194, 308, 388, 679, 683, 1067, 1358, 1366, 2134, 2716, 2732, 4268, 4781, 7469, 7513, 9562, 14938, 15026, 19124, 29876, 30052, 52591, 66251, 105182, 132502, 210364, 265004, 463757, 728761, 927514, 1457522, 1855028, 2915044, 5101327, 10202654, 20405308]

約数ペア:

[(1, 20405308), (2, 10202654), (4, 5101327), (7, 2915044), (11, 1855028), (14, 1457522), (22, 927514), (28, 728761), (44, 463757), (77, 265004), (97, 210364), (154, 132502), (194, 105182), (308, 66251), (388, 52591), (679, 30052), (683, 29876), (1067, 19124), (1358, 15026), (1366, 14938), (2134, 9562), (2716, 7513), (2732, 7469), (4268, 4781)]