9990928

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{20143}}^1$

素因数の和:20182

約数の個数: 20

約数和(自身を含む): 19982848

約数和(自身を除く): 9991920

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 20143, 40286, 80572, 161144, 322288, 624433, 1248866, 2497732, 4995464, 9990928]

約数ペア:

[(1, 9990928), (2, 4995464), (4, 2497732), (8, 1248866), (16, 624433), (31, 322288), (62, 161144), (124, 80572), (248, 40286), (496, 20143)]