28688180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{84377}}^1$

素因数の和:84403

約数の個数: 24

約数和(自身を含む): 63789768

約数和(自身を除く): 35101588

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 84377, 168754, 337508, 421885, 843770, 1434409, 1687540, 2868818, 5737636, 7172045, 14344090, 28688180]

約数ペア:

[(1, 28688180), (2, 14344090), (4, 7172045), (5, 5737636), (10, 2868818), (17, 1687540), (20, 1434409), (34, 843770), (68, 421885), (85, 337508), (170, 168754), (340, 84377)]