990267860

素因数分解:

$2^2\times 5^1\times {\mathrm{1171}}^1\times {\mathrm{42283}}^1$

素因数の和:43463

約数の個数: 24

約数和(自身を含む): 2081387616

約数和(自身を除く): 1091119756

約数列:

[1, 2, 4, 5, 10, 20, 1171, 2342, 4684, 5855, 11710, 23420, 42283, 84566, 169132, 211415, 422830, 845660, 49513393, 99026786, 198053572, 247566965, 495133930, 990267860]

約数ペア:

[(1, 990267860), (2, 495133930), (4, 247566965), (5, 198053572), (10, 99026786), (20, 49513393), (1171, 845660), (2342, 422830), (4684, 211415), (5855, 169132), (11710, 84566), (23420, 42283)]