820325

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:197

約数の個数: 24

約数和(自身を含む): 1175520

約数和(自身を除く): 355195

約数列:

[1, 5, 11, 19, 25, 55, 95, 157, 209, 275, 475, 785, 1045, 1727, 2983, 3925, 5225, 8635, 14915, 32813, 43175, 74575, 164065, 820325]

約数ペア:

[(1, 820325), (5, 164065), (11, 74575), (19, 43175), (25, 32813), (55, 14915), (95, 8635), (157, 5225), (209, 3925), (275, 2983), (475, 1727), (785, 1045)]