19701380

素因数分解:

$2^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{2351}}^1$

素因数の和:2779

約数の個数: 24

約数和(自身を含む): 41489280

約数和(自身を除く): 21787900

約数列:

[1, 2, 4, 5, 10, 20, 419, 838, 1676, 2095, 2351, 4190, 4702, 8380, 9404, 11755, 23510, 47020, 985069, 1970138, 3940276, 4925345, 9850690, 19701380]

約数ペア:

[(1, 19701380), (2, 9850690), (4, 4925345), (5, 3940276), (10, 1970138), (20, 985069), (419, 47020), (838, 23510), (1676, 11755), (2095, 9404), (2351, 8380), (4190, 4702)]