780140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2053}}^1$

素因数の和:2081

約数の個数: 24

約数和(自身を含む): 1725360

約数和(自身を除く): 945220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 2053, 4106, 8212, 10265, 20530, 39007, 41060, 78014, 156028, 195035, 390070, 780140]

約数ペア:

[(1, 780140), (2, 390070), (4, 195035), (5, 156028), (10, 78014), (19, 41060), (20, 39007), (38, 20530), (76, 10265), (95, 8212), (190, 4106), (380, 2053)]