81237220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{337}}^1\times {\mathrm{709}}^1$

素因数の和:1072

約数の個数: 48

約数和(自身を含む): 181424880

約数和(自身を除く): 100187660

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 337, 340, 674, 709, 1348, 1418, 1685, 2836, 3370, 3545, 5729, 6740, 7090, 11458, 12053, 14180, 22916, 24106, 28645, 48212, 57290, 60265, 114580, 120530, 238933, 241060, 477866, 955732, 1194665, 2389330, 4061861, 4778660, 8123722, 16247444, 20309305, 40618610, 81237220]

約数ペア:

[(1, 81237220), (2, 40618610), (4, 20309305), (5, 16247444), (10, 8123722), (17, 4778660), (20, 4061861), (34, 2389330), (68, 1194665), (85, 955732), (170, 477866), (337, 241060), (340, 238933), (674, 120530), (709, 114580), (1348, 60265), (1418, 57290), (1685, 48212), (2836, 28645), (3370, 24106), (3545, 22916), (5729, 14180), (6740, 12053), (7090, 11458)]