25181915

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:523

約数の個数: 24

約数和(自身を含む): 33611760

約数和(自身を除く): 8429845

約数列:

[1, 5, 11, 55, 107, 121, 389, 535, 605, 1177, 1945, 4279, 5885, 12947, 21395, 41623, 47069, 64735, 208115, 235345, 457853, 2289265, 5036383, 25181915]

約数ペア:

[(1, 25181915), (5, 5036383), (11, 2289265), (55, 457853), (107, 235345), (121, 208115), (389, 64735), (535, 47069), (605, 41623), (1177, 21395), (1945, 12947), (4279, 5885)]