18690910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1949}}^1$

素因数の和:2100

約数の個数: 32

約数和(自身を含む): 38750400

約数和(自身を除く): 20059490

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 137, 274, 685, 959, 1370, 1918, 1949, 3898, 4795, 9590, 9745, 13643, 19490, 27286, 68215, 136430, 267013, 534026, 1335065, 1869091, 2670130, 3738182, 9345455, 18690910]

約数ペア:

[(1, 18690910), (2, 9345455), (5, 3738182), (7, 2670130), (10, 1869091), (14, 1335065), (35, 534026), (70, 267013), (137, 136430), (274, 68215), (685, 27286), (959, 19490), (1370, 13643), (1918, 9745), (1949, 9590), (3898, 4795)]