217801075

素因数分解:

$5^2\times {\mathrm{109}}^1\times {\mathrm{257}}^1\times {\mathrm{311}}^1$

素因数の和:687

約数の個数: 24

約数和(自身を含む): 274491360

約数和(自身を除く): 56690285

約数列:

[1, 5, 25, 109, 257, 311, 545, 1285, 1555, 2725, 6425, 7775, 28013, 33899, 79927, 140065, 169495, 399635, 700325, 847475, 1998175, 8712043, 43560215, 217801075]

約数ペア:

[(1, 217801075), (5, 43560215), (25, 8712043), (109, 1998175), (257, 847475), (311, 700325), (545, 399635), (1285, 169495), (1555, 140065), (2725, 79927), (6425, 33899), (7775, 28013)]