3987245

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{47}}^2$

素因数の和:137

約数の個数: 18

約数和(自身を含む): 5159502

約数和(自身を除く): 1172257

約数列:

[1, 5, 19, 47, 95, 235, 361, 893, 1805, 2209, 4465, 11045, 16967, 41971, 84835, 209855, 797449, 3987245]

約数ペア:

[(1, 3987245), (5, 797449), (19, 209855), (47, 84835), (95, 41971), (235, 16967), (361, 11045), (893, 4465), (1805, 2209)]