25540972

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{647}}^1$

素因数の和:861

約数の個数: 24

約数和(自身を含む): 45722880

約数和(自身を除く): 20181908

約数列:

[1, 2, 4, 71, 139, 142, 278, 284, 556, 647, 1294, 2588, 9869, 19738, 39476, 45937, 89933, 91874, 179866, 183748, 359732, 6385243, 12770486, 25540972]

約数ペア:

[(1, 25540972), (2, 12770486), (4, 6385243), (71, 359732), (139, 183748), (142, 179866), (278, 91874), (284, 89933), (556, 45937), (647, 39476), (1294, 19738), (2588, 9869)]