18711890

素因数分解:

$2^1\times 5^1\times {\mathrm{937}}^1\times {\mathrm{1997}}^1$

素因数の和:2941

約数の個数: 16

約数和(自身を含む): 33734232

約数和(自身を除く): 15022342

約数列:

[1, 2, 5, 10, 937, 1874, 1997, 3994, 4685, 9370, 9985, 19970, 1871189, 3742378, 9355945, 18711890]

約数ペア:

[(1, 18711890), (2, 9355945), (5, 3742378), (10, 1871189), (937, 19970), (1874, 9985), (1997, 9370), (3994, 4685)]