289760140

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{35423}}^1$

素因数の和:35841

約数の個数: 24

約数和(自身を含む): 610001280

約数和(自身を除く): 320241140

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 35423, 70846, 141692, 177115, 354230, 708460, 14488007, 28976014, 57952028, 72440035, 144880070, 289760140]

約数ペア:

[(1, 289760140), (2, 144880070), (4, 72440035), (5, 57952028), (10, 28976014), (20, 14488007), (409, 708460), (818, 354230), (1636, 177115), (2045, 141692), (4090, 70846), (8180, 35423)]