178397620

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{193}}^1\times {\mathrm{409}}^1$

素因数の和:724

約数の個数: 48

約数和(自身を含む): 380837520

約数和(自身を除く): 202439900

約数列:

[1, 2, 4, 5, 10, 20, 113, 193, 226, 386, 409, 452, 565, 772, 818, 965, 1130, 1636, 1930, 2045, 2260, 3860, 4090, 8180, 21809, 43618, 46217, 78937, 87236, 92434, 109045, 157874, 184868, 218090, 231085, 315748, 394685, 436180, 462170, 789370, 924340, 1578740, 8919881, 17839762, 35679524, 44599405, 89198810, 178397620]

約数ペア:

[(1, 178397620), (2, 89198810), (4, 44599405), (5, 35679524), (10, 17839762), (20, 8919881), (113, 1578740), (193, 924340), (226, 789370), (386, 462170), (409, 436180), (452, 394685), (565, 315748), (772, 231085), (818, 218090), (965, 184868), (1130, 157874), (1636, 109045), (1930, 92434), (2045, 87236), (2260, 78937), (3860, 46217), (4090, 43618), (8180, 21809)]