18886903

素因数分解:

$7^2\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 22982400

約数和(自身を除く): 4095497

約数列:

[1, 7, 47, 49, 59, 139, 329, 413, 973, 2303, 2773, 2891, 6533, 6811, 8201, 19411, 45731, 57407, 135877, 320117, 385447, 401849, 2698129, 18886903]

約数ペア:

[(1, 18886903), (7, 2698129), (47, 401849), (49, 385447), (59, 320117), (139, 135877), (329, 57407), (413, 45731), (973, 19411), (2303, 8201), (2773, 6811), (2891, 6533)]