20940520

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{14149}}^1$

素因数の和:14197

約数の個数: 32

約数和(自身を含む): 48393000

約数和(自身を除く): 27452480

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 14149, 28298, 56596, 70745, 113192, 141490, 282980, 523513, 565960, 1047026, 2094052, 2617565, 4188104, 5235130, 10470260, 20940520]

約数ペア:

[(1, 20940520), (2, 10470260), (4, 5235130), (5, 4188104), (8, 2617565), (10, 2094052), (20, 1047026), (37, 565960), (40, 523513), (74, 282980), (148, 141490), (185, 113192), (296, 70745), (370, 56596), (740, 28298), (1480, 14149)]