18870260

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4231}}^1$

素因数の和:4463

約数の個数: 24

約数和(自身を含む): 39814656

約数和(自身を除く): 20944396

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4231, 4460, 8462, 16924, 21155, 42310, 84620, 943513, 1887026, 3774052, 4717565, 9435130, 18870260]

約数ペア:

[(1, 18870260), (2, 9435130), (4, 4717565), (5, 3774052), (10, 1887026), (20, 943513), (223, 84620), (446, 42310), (892, 21155), (1115, 16924), (2230, 8462), (4231, 4460)]