1980925

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:165

約数の個数: 24

約数和(自身を含む): 2678400

約数和(自身を除く): 697475

約数列:

[1, 5, 17, 25, 59, 79, 85, 295, 395, 425, 1003, 1343, 1475, 1975, 4661, 5015, 6715, 23305, 25075, 33575, 79237, 116525, 396185, 1980925]

約数ペア:

[(1, 1980925), (5, 396185), (17, 116525), (25, 79237), (59, 33575), (79, 25075), (85, 23305), (295, 6715), (395, 5015), (425, 4661), (1003, 1975), (1343, 1475)]