27990725

素因数分解:

$5^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{521}}^1$

素因数の和:845

約数の個数: 24

約数和(自身を含む): 39872448

約数和(自身を除く): 11881723

約数列:

[1, 5, 7, 25, 35, 175, 307, 521, 1535, 2149, 2605, 3647, 7675, 10745, 13025, 18235, 53725, 91175, 159947, 799735, 1119629, 3998675, 5598145, 27990725]

約数ペア:

[(1, 27990725), (5, 5598145), (7, 3998675), (25, 1119629), (35, 799735), (175, 159947), (307, 91175), (521, 53725), (1535, 18235), (2149, 13025), (2605, 10745), (3647, 7675)]