261271835

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{2909}}^1$

素因数の和:3019

約数の個数: 32

約数和(自身を含む): 362050560

約数和(自身を除く): 100778725

約数列:

[1, 5, 11, 23, 55, 71, 115, 253, 355, 781, 1265, 1633, 2909, 3905, 8165, 14545, 17963, 31999, 66907, 89815, 159995, 206539, 334535, 735977, 1032695, 2271929, 3679885, 4750397, 11359645, 23751985, 52254367, 261271835]

約数ペア:

[(1, 261271835), (5, 52254367), (11, 23751985), (23, 11359645), (55, 4750397), (71, 3679885), (115, 2271929), (253, 1032695), (355, 735977), (781, 334535), (1265, 206539), (1633, 159995), (2909, 89815), (3905, 66907), (8165, 31999), (14545, 17963)]