18913970

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{9601}}^1$

素因数の和:9805

約数の個数: 16

約数和(自身を含む): 34221528

約数和(自身を除く): 15307558

約数列:

[1, 2, 5, 10, 197, 394, 985, 1970, 9601, 19202, 48005, 96010, 1891397, 3782794, 9456985, 18913970]

約数ペア:

[(1, 18913970), (2, 9456985), (5, 3782794), (10, 1891397), (197, 96010), (394, 48005), (985, 19202), (1970, 9601)]