26820520

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{2609}}^1$

素因数の和:2877

約数の個数: 32

約数和(自身を含む): 60604200

約数和(自身を除く): 33783680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 2609, 5140, 5218, 10280, 10436, 13045, 20872, 26090, 52180, 104360, 670513, 1341026, 2682052, 3352565, 5364104, 6705130, 13410260, 26820520]

約数ペア:

[(1, 26820520), (2, 13410260), (4, 6705130), (5, 5364104), (8, 3352565), (10, 2682052), (20, 1341026), (40, 670513), (257, 104360), (514, 52180), (1028, 26090), (1285, 20872), (2056, 13045), (2570, 10436), (2609, 10280), (5140, 5218)]