18881350

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{4243}}^1$

素因数の和:4344

約数の個数: 24

約数和(自身を含む): 35522280

約数和(自身を除く): 16640930

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 445, 890, 2225, 4243, 4450, 8486, 21215, 42430, 106075, 212150, 377627, 755254, 1888135, 3776270, 9440675, 18881350]

約数ペア:

[(1, 18881350), (2, 9440675), (5, 3776270), (10, 1888135), (25, 755254), (50, 377627), (89, 212150), (178, 106075), (445, 42430), (890, 21215), (2225, 8486), (4243, 4450)]