20278190

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49459}}^1$

素因数の和:49507

約数の個数: 16

約数和(自身を含む): 37391760

約数和(自身を除く): 17113570

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 49459, 98918, 247295, 494590, 2027819, 4055638, 10139095, 20278190]

約数ペア:

[(1, 20278190), (2, 10139095), (5, 4055638), (10, 2027819), (41, 494590), (82, 247295), (205, 98918), (410, 49459)]