80187860

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{7877}}^1$

素因数の和:8395

約数の個数: 24

約数和(自身を含む): 168746760

約数和(自身を除く): 88558900

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 5090, 7877, 10180, 15754, 31508, 39385, 78770, 157540, 4009393, 8018786, 16037572, 20046965, 40093930, 80187860]

約数ペア:

[(1, 80187860), (2, 40093930), (4, 20046965), (5, 16037572), (10, 8018786), (20, 4009393), (509, 157540), (1018, 78770), (2036, 39385), (2545, 31508), (5090, 15754), (7877, 10180)]